vcs.maemo.org Git - qemu/blob - qemu/linux-user/syscall.c

   1 /*
   2  *  Linux syscalls
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include <elf.h>
  25 #include <endian.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <fcntl.h>
  29 #include <time.h>
  30 #include <sys/types.h>
  31 #include <sys/wait.h>
  32 #include <sys/time.h>
  33 #include <sys/stat.h>
  34 #include <sys/mount.h>
  35 #include <sys/resource.h>
  36 #include <sys/mman.h>
  37 #include <sys/swap.h>
  38 #include <signal.h>
  39 #include <sched.h>
  40 #include <sys/socket.h>
  41 #include <sys/uio.h>
  42 #include <sys/poll.h>
  43 #include <sys/times.h>
  44 #include <sys/shm.h>
  45 #include <utime.h>
  46 #include <sys/sysinfo.h>
  47 //#include <sys/user.h>
  48 #include <netinet/ip.h>
  49 #include <netinet/tcp.h>
  50
  51 #define termios host_termios
  52 #define winsize host_winsize
  53 #define termio host_termio
  54 #define sgttyb host_sgttyb /* same as target */
  55 #define tchars host_tchars /* same as target */
  56 #define ltchars host_ltchars /* same as target */
  57
  58 #include <linux/termios.h>
  59 #include <linux/unistd.h>
  60 #include <linux/utsname.h>
  61 #include <linux/cdrom.h>
  62 #include <linux/hdreg.h>
  63 #include <linux/soundcard.h>
  64 #include <linux/dirent.h>
  65 #include <linux/kd.h>
  66
  67 #include "qemu.h"
  68
  69 //#define DEBUG
  70
  71 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC)
  72 /* 16 bit uid wrappers emulation */
  73 #define USE_UID16
  74 #endif
  75
  76 //#include <linux/msdos_fs.h>
  77 #define VFAT_IOCTL_READDIR_BOTH         _IOR('r', 1, struct dirent [2])
  78 #define VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
  79
  80
  81 #if defined(__powerpc__)
  82 #undef __syscall_nr
  83 #undef __sc_loadargs_0
  84 #undef __sc_loadargs_1
  85 #undef __sc_loadargs_2
  86 #undef __sc_loadargs_3
  87 #undef __sc_loadargs_4
  88 #undef __sc_loadargs_5
  89 #undef __sc_asm_input_0
  90 #undef __sc_asm_input_1
  91 #undef __sc_asm_input_2
  92 #undef __sc_asm_input_3
  93 #undef __sc_asm_input_4
  94 #undef __sc_asm_input_5
  95 #undef _syscall0
  96 #undef _syscall1
  97 #undef _syscall2
  98 #undef _syscall3
  99 #undef _syscall4
 100 #undef _syscall5
 101
 102 /* need to redefine syscalls as Linux kernel defines are incorrect for
 103    the clobber list */
 104 /* On powerpc a system call basically clobbers the same registers like a
 105  * function call, with the exception of LR (which is needed for the
 106  * "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
 107  * an error return status).
 108  */
 109
 110 #define __syscall_nr(nr, type, name, args...)                           \
 111         unsigned long __sc_ret, __sc_err;                               \
 112         {                                                               \
 113                 register unsigned long __sc_0  __asm__ ("r0");          \
 114                 register unsigned long __sc_3  __asm__ ("r3");          \
 115                 register unsigned long __sc_4  __asm__ ("r4");          \
 116                 register unsigned long __sc_5  __asm__ ("r5");          \
 117                 register unsigned long __sc_6  __asm__ ("r6");          \
 118                 register unsigned long __sc_7  __asm__ ("r7");          \
 119                                                                         \
 120                 __sc_loadargs_##nr(name, args);                         \
 121                 __asm__ __volatile__                                    \
 122                         ("sc           \n\t"                            \
 123                          "mfcr %0      "                                \
 124                         : "=&r" (__sc_0),                               \
 125                           "=&r" (__sc_3),  "=&r" (__sc_4),              \
 126                           "=&r" (__sc_5),  "=&r" (__sc_6),              \
 127                           "=&r" (__sc_7)                                \
 128                         : __sc_asm_input_##nr                           \
 129                         : "cr0", "ctr", "memory",                       \
 130                           "r8", "r9", "r10","r11", "r12");              \
 131                 __sc_ret = __sc_3;                                      \
 132                 __sc_err = __sc_0;                                      \
 133         }                                                               \
 134         if (__sc_err & 0x10000000)                                      \
 135         {                                                               \
 136                 errno = __sc_ret;                                       \
 137                 __sc_ret = -1;                                          \
 138         }                                                               \
 139         return (type) __sc_ret
 140
 141 #define __sc_loadargs_0(name, dummy...)                                 \
 142         __sc_0 = __NR_##name
 143 #define __sc_loadargs_1(name, arg1)                                     \
 144         __sc_loadargs_0(name);                                          \
 145         __sc_3 = (unsigned long) (arg1)
 146 #define __sc_loadargs_2(name, arg1, arg2)                               \
 147         __sc_loadargs_1(name, arg1);                                    \
 148         __sc_4 = (unsigned long) (arg2)
 149 #define __sc_loadargs_3(name, arg1, arg2, arg3)                         \
 150         __sc_loadargs_2(name, arg1, arg2);                              \
 151         __sc_5 = (unsigned long) (arg3)
 152 #define __sc_loadargs_4(name, arg1, arg2, arg3, arg4)                   \
 153         __sc_loadargs_3(name, arg1, arg2, arg3);                        \
 154         __sc_6 = (unsigned long) (arg4)
 155 #define __sc_loadargs_5(name, arg1, arg2, arg3, arg4, arg5)             \
 156         __sc_loadargs_4(name, arg1, arg2, arg3, arg4);                  \
 157         __sc_7 = (unsigned long) (arg5)
 158
 159 #define __sc_asm_input_0 "0" (__sc_0)
 160 #define __sc_asm_input_1 __sc_asm_input_0, "1" (__sc_3)
 161 #define __sc_asm_input_2 __sc_asm_input_1, "2" (__sc_4)
 162 #define __sc_asm_input_3 __sc_asm_input_2, "3" (__sc_5)
 163 #define __sc_asm_input_4 __sc_asm_input_3, "4" (__sc_6)
 164 #define __sc_asm_input_5 __sc_asm_input_4, "5" (__sc_7)
 165
 166 #define _syscall0(type,name)                                            \
 167 type name(void)                                                         \
 168 {                                                                       \
 169         __syscall_nr(0, type, name);                                    \
 170 }
 171
 172 #define _syscall1(type,name,type1,arg1)                                 \
 173 type name(type1 arg1)                                                   \
 174 {                                                                       \
 175         __syscall_nr(1, type, name, arg1);                              \
 176 }
 177
 178 #define _syscall2(type,name,type1,arg1,type2,arg2)                      \
 179 type name(type1 arg1, type2 arg2)                                       \
 180 {                                                                       \
 181         __syscall_nr(2, type, name, arg1, arg2);                        \
 182 }
 183
 184 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)           \
 185 type name(type1 arg1, type2 arg2, type3 arg3)                           \
 186 {                                                                       \
 187         __syscall_nr(3, type, name, arg1, arg2, arg3);                  \
 188 }
 189
 190 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
 191 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)               \
 192 {                                                                       \
 193         __syscall_nr(4, type, name, arg1, arg2, arg3, arg4);            \
 194 }
 195
 196 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
 197 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)   \
 198 {                                                                       \
 199         __syscall_nr(5, type, name, arg1, arg2, arg3, arg4, arg5);      \
 200 }
 201 #endif
 202
 203 #define __NR_sys_uname __NR_uname
 204 #define __NR_sys_getcwd1 __NR_getcwd
 205 #define __NR_sys_statfs __NR_statfs
 206 #define __NR_sys_fstatfs __NR_fstatfs
 207 #define __NR_sys_getdents __NR_getdents
 208 #define __NR_sys_getdents64 __NR_getdents64
 209 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
 210
 211 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
 212 #define __NR__llseek __NR_lseek
 213 #endif
 214
 215 #ifdef __NR_gettid
 216 _syscall0(int, gettid)
 217 #else
 218 static int gettid(void) {
 219     return -ENOSYS;
 220 }
 221 #endif
 222 _syscall1(int,sys_uname,struct new_utsname *,buf)
 223 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
 224 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
 225 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
 226 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
 227           loff_t *, res, uint, wh);
 228 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
 229 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
 230 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 231 #ifdef __NR_exit_group
 232 _syscall1(int,exit_group,int,error_code)
 233 #endif
 234
 235 extern int personality(int);
 236 extern int flock(int, int);
 237 extern int setfsuid(int);
 238 extern int setfsgid(int);
 239 extern int setresuid(uid_t, uid_t, uid_t);
 240 extern int getresuid(uid_t *, uid_t *, uid_t *);
 241 extern int setresgid(gid_t, gid_t, gid_t);
 242 extern int getresgid(gid_t *, gid_t *, gid_t *);
 243 extern int setgroups(int, gid_t *);
 244
 245 static inline long get_errno(long ret)
 246 {
 247     if (ret == -1)
 248         return -errno;
 249     else
 250         return ret;
 251 }
 252
 253 static inline int is_error(long ret)
 254 {
 255     return (unsigned long)ret >= (unsigned long)(-4096);
 256 }
 257
 258 static char *target_brk;
 259 static char *target_original_brk;
 260
 261 void target_set_brk(char *new_brk)
 262 {
 263     target_brk = new_brk;
 264     target_original_brk = new_brk;
 265 }
 266
 267 long do_brk(char *new_brk)
 268 {
 269     char *brk_page;
 270     long mapped_addr;
 271     int new_alloc_size;
 272
 273     if (!new_brk)
 274         return (long)target_brk;
 275     if (new_brk < target_original_brk)
 276         return -ENOMEM;
 277
 278     brk_page = (char *)HOST_PAGE_ALIGN((unsigned long)target_brk);
 279
 280     /* If the new brk is less than this, set it and we're done... */
 281     if (new_brk < brk_page) {
 282         target_brk = new_brk;
 283         return (long)target_brk;
 284     }
 285
 286     /* We need to allocate more memory after the brk... */
 287     new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
 288     mapped_addr = get_errno(target_mmap((unsigned long)brk_page, new_alloc_size,
 289                                         PROT_READ|PROT_WRITE,
 290                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 291     if (is_error(mapped_addr)) {
 292         return mapped_addr;
 293     } else {
 294         target_brk = new_brk;
 295         return (long)target_brk;
 296     }
 297 }
 298
 299 static inline fd_set *target_to_host_fds(fd_set *fds,
 300                                          target_long *target_fds, int n)
 301 {
 302 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 303     return (fd_set *)target_fds;
 304 #else
 305     int i, b;
 306     if (target_fds) {
 307         FD_ZERO(fds);
 308         for(i = 0;i < n; i++) {
 309             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 310                  (i & (TARGET_LONG_BITS - 1))) & 1;
 311             if (b)
 312                 FD_SET(i, fds);
 313         }
 314         return fds;
 315     } else {
 316         return NULL;
 317     }
 318 #endif
 319 }
 320
 321 static inline void host_to_target_fds(target_long *target_fds,
 322                                       fd_set *fds, int n)
 323 {
 324 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 325     /* nothing to do */
 326 #else
 327     int i, nw, j, k;
 328     target_long v;
 329
 330     if (target_fds) {
 331         nw = (n + TARGET_LONG_BITS - 1) / TARGET_LONG_BITS;
 332         k = 0;
 333         for(i = 0;i < nw; i++) {
 334             v = 0;
 335             for(j = 0; j < TARGET_LONG_BITS; j++) {
 336                 v |= ((FD_ISSET(k, fds) != 0) << j);
 337                 k++;
 338             }
 339             target_fds[i] = tswapl(v);
 340         }
 341     }
 342 #endif
 343 }
 344
 345 #if defined(__alpha__)
 346 #define HOST_HZ 1024
 347 #else
 348 #define HOST_HZ 100
 349 #endif
 350
 351 static inline long host_to_target_clock_t(long ticks)
 352 {
 353 #if HOST_HZ == TARGET_HZ
 354     return ticks;
 355 #else
 356     return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
 357 #endif
 358 }
 359
 360 static inline void host_to_target_rusage(struct target_rusage *target_rusage,
 361                                          const struct rusage *rusage)
 362 {
 363     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 364     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 365     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 366     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 367     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 368     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 369     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 370     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 371     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 372     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 373     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 374     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 375     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 376     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 377     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 378     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 379     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 380     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 381 }
 382
 383 static inline void target_to_host_timeval(struct timeval *tv,
 384                                           const struct target_timeval *target_tv)
 385 {
 386     tv->tv_sec = tswapl(target_tv->tv_sec);
 387     tv->tv_usec = tswapl(target_tv->tv_usec);
 388 }
 389
 390 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 391                                           const struct timeval *tv)
 392 {
 393     target_tv->tv_sec = tswapl(tv->tv_sec);
 394     target_tv->tv_usec = tswapl(tv->tv_usec);
 395 }
 396
 397
 398 static long do_select(long n,
 399                       target_long *target_rfds, target_long *target_wfds,
 400                       target_long *target_efds, struct target_timeval *target_tv)
 401 {
 402     fd_set rfds, wfds, efds;
 403     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 404     struct timeval tv, *tv_ptr;
 405     long ret;
 406
 407     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 408     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 409     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 410
 411     if (target_tv) {
 412         target_to_host_timeval(&tv, target_tv);
 413         tv_ptr = &tv;
 414     } else {
 415         tv_ptr = NULL;
 416     }
 417     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 418     if (!is_error(ret)) {
 419         host_to_target_fds(target_rfds, rfds_ptr, n);
 420         host_to_target_fds(target_wfds, wfds_ptr, n);
 421         host_to_target_fds(target_efds, efds_ptr, n);
 422
 423         if (target_tv) {
 424             host_to_target_timeval(target_tv, &tv);
 425         }
 426     }
 427     return ret;
 428 }
 429
 430 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 431                                            struct target_sockaddr *target_addr,
 432                                            socklen_t len)
 433 {
 434     memcpy(addr, target_addr, len);
 435     addr->sa_family = tswap16(target_addr->sa_family);
 436 }
 437
 438 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 439                                            struct sockaddr *addr,
 440                                            socklen_t len)
 441 {
 442     memcpy(target_addr, addr, len);
 443     target_addr->sa_family = tswap16(addr->sa_family);
 444 }
 445
 446 static inline void target_to_host_cmsg(struct msghdr *msgh,
 447                                        struct target_msghdr *target_msgh)
 448 {
 449     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 450     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 451     socklen_t space = 0;
 452
 453     while (cmsg && target_cmsg) {
 454         void *data = CMSG_DATA(cmsg);
 455         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 456
 457         int len = tswapl(target_cmsg->cmsg_len)
 458                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 459
 460         space += CMSG_SPACE(len);
 461         if (space > msgh->msg_controllen) {
 462             space -= CMSG_SPACE(len);
 463             gemu_log("Host cmsg overflow");
 464             break;
 465         }
 466
 467         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 468         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 469         cmsg->cmsg_len = CMSG_LEN(len);
 470
 471         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 472             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 473             memcpy(data, target_data, len);
 474         } else {
 475             int *fd = (int *)data;
 476             int *target_fd = (int *)target_data;
 477             int i, numfds = len / sizeof(int);
 478
 479             for (i = 0; i < numfds; i++)
 480                 fd[i] = tswap32(target_fd[i]);
 481         }
 482
 483         cmsg = CMSG_NXTHDR(msgh, cmsg);
 484         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 485     }
 486
 487     msgh->msg_controllen = space;
 488 }
 489
 490 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 491                                        struct msghdr *msgh)
 492 {
 493     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 494     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 495     socklen_t space = 0;
 496
 497     while (cmsg && target_cmsg) {
 498         void *data = CMSG_DATA(cmsg);
 499         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 500
 501         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 502
 503         space += TARGET_CMSG_SPACE(len);
 504         if (space > tswapl(target_msgh->msg_controllen)) {
 505             space -= TARGET_CMSG_SPACE(len);
 506             gemu_log("Target cmsg overflow");
 507             break;
 508         }
 509
 510         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 511         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 512         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 513
 514         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 515             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 516             memcpy(target_data, data, len);
 517         } else {
 518             int *fd = (int *)data;
 519             int *target_fd = (int *)target_data;
 520             int i, numfds = len / sizeof(int);
 521
 522             for (i = 0; i < numfds; i++)
 523                 target_fd[i] = tswap32(fd[i]);
 524         }
 525
 526         cmsg = CMSG_NXTHDR(msgh, cmsg);
 527         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 528     }
 529
 530     msgh->msg_controllen = tswapl(space);
 531 }
 532
 533 static long do_setsockopt(int sockfd, int level, int optname,
 534                           void *optval, socklen_t optlen)
 535 {
 536     int val, ret;
 537
 538     switch(level) {
 539     case SOL_TCP:
 540         /* TCP options all take an 'int' value.  */
 541         if (optlen < sizeof(uint32_t))
 542             return -EINVAL;
 543
 544         if (get_user(val, (uint32_t *)optval))
 545             return -EFAULT;
 546         ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 547         break;
 548     case SOL_IP:
 549         switch(optname) {
 550         case IP_TOS:
 551         case IP_TTL:
 552         case IP_HDRINCL:
 553         case IP_ROUTER_ALERT:
 554         case IP_RECVOPTS:
 555         case IP_RETOPTS:
 556         case IP_PKTINFO:
 557         case IP_MTU_DISCOVER:
 558         case IP_RECVERR:
 559         case IP_RECVTOS:
 560 #ifdef IP_FREEBIND
 561         case IP_FREEBIND:
 562 #endif
 563         case IP_MULTICAST_TTL:
 564         case IP_MULTICAST_LOOP:
 565             val = 0;
 566             if (optlen >= sizeof(uint32_t)) {
 567                 if (get_user(val, (uint32_t *)optval))
 568                     return -EFAULT;
 569             } else if (optlen >= 1) {
 570                 if (get_user(val, (uint8_t *)optval))
 571                     return -EFAULT;
 572             }
 573             ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 574             break;
 575         default:
 576             goto unimplemented;
 577         }
 578         break;
 579     case SOL_SOCKET:
 580         switch (optname) {
 581             /* Options with 'int' argument.  */
 582         case SO_DEBUG:
 583         case SO_REUSEADDR:
 584         case SO_TYPE:
 585         case SO_ERROR:
 586         case SO_DONTROUTE:
 587         case SO_BROADCAST:
 588         case SO_SNDBUF:
 589         case SO_RCVBUF:
 590         case SO_KEEPALIVE:
 591         case SO_OOBINLINE:
 592         case SO_NO_CHECK:
 593         case SO_PRIORITY:
 594 #ifdef SO_BSDCOMPAT
 595         case SO_BSDCOMPAT:
 596 #endif
 597         case SO_PASSCRED:
 598         case SO_TIMESTAMP:
 599         case SO_RCVLOWAT:
 600         case SO_RCVTIMEO:
 601         case SO_SNDTIMEO:
 602             if (optlen < sizeof(uint32_t))
 603                 return -EINVAL;
 604             if (get_user(val, (uint32_t *)optval))
 605                 return -EFAULT;
 606             ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 607             break;
 608         default:
 609             goto unimplemented;
 610         }
 611         break;
 612     default:
 613     unimplemented:
 614         gemu_log("Unsupported setsockopt level=%d optname=%d \n", level, optname);
 615         ret = -ENOSYS;
 616     }
 617     return ret;
 618 }
 619
 620 static long do_getsockopt(int sockfd, int level, int optname,
 621                           void *optval, socklen_t *optlen)
 622 {
 623     int len, lv, val, ret;
 624
 625     switch(level) {
 626     case SOL_SOCKET:
 627         switch (optname) {
 628         case SO_LINGER:
 629         case SO_RCVTIMEO:
 630         case SO_SNDTIMEO:
 631         case SO_PEERCRED:
 632         case SO_PEERNAME:
 633             /* These don't just return a single integer */
 634             goto unimplemented;
 635         default:
 636             goto int_case;
 637         }
 638         break;
 639     case SOL_TCP:
 640         /* TCP options all take an 'int' value.  */
 641     int_case:
 642         if (get_user(len, optlen))
 643             return -EFAULT;
 644         if (len < 0)
 645             return -EINVAL;
 646         lv = sizeof(int);
 647         ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
 648         if (ret < 0)
 649             return ret;
 650         val = tswap32(val);
 651         if (len > lv)
 652             len = lv;
 653         if (copy_to_user(optval, &val, len))
 654             return -EFAULT;
 655         if (put_user(len, optlen))
 656             return -EFAULT;
 657         break;
 658     case SOL_IP:
 659         switch(optname) {
 660         case IP_TOS:
 661         case IP_TTL:
 662         case IP_HDRINCL:
 663         case IP_ROUTER_ALERT:
 664         case IP_RECVOPTS:
 665         case IP_RETOPTS:
 666         case IP_PKTINFO:
 667         case IP_MTU_DISCOVER:
 668         case IP_RECVERR:
 669         case IP_RECVTOS:
 670 #ifdef IP_FREEBIND
 671         case IP_FREEBIND:
 672 #endif
 673         case IP_MULTICAST_TTL:
 674         case IP_MULTICAST_LOOP:
 675             if (get_user(len, optlen))
 676                 return -EFAULT;
 677             if (len < 0)
 678                 return -EINVAL;
 679             lv = sizeof(int);
 680             ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
 681             if (ret < 0)
 682                 return ret;
 683             if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
 684                 unsigned char ucval = val;
 685                 len = 1;
 686                 if (put_user(len, optlen))
 687                     return -EFAULT;
 688                 if (copy_to_user(optval,&ucval,1))
 689                     return -EFAULT;
 690             } else {
 691                 val = tswap32(val);
 692                 if (len > sizeof(int))
 693                     len = sizeof(int);
 694                 if (put_user(len, optlen))
 695                     return -EFAULT;
 696                 if (copy_to_user(optval, &val, len))
 697                     return -EFAULT;
 698             }
 699             break;
 700         default:
 701             goto unimplemented;
 702         }
 703         break;
 704     default:
 705     unimplemented:
 706         gemu_log("getsockopt level=%d optname=%d not yet supported\n",
 707                  level, optname);
 708         ret = -ENOSYS;
 709         break;
 710     }
 711     return ret;
 712 }
 713
 714 static long do_socketcall(int num, int32_t *vptr)
 715 {
 716     long ret;
 717
 718     switch(num) {
 719     case SOCKOP_socket:
 720         {
 721             int domain = tswap32(vptr[0]);
 722             int type = tswap32(vptr[1]);
 723             int protocol = tswap32(vptr[2]);
 724
 725             ret = get_errno(socket(domain, type, protocol));
 726         }
 727         break;
 728     case SOCKOP_bind:
 729         {
 730             int sockfd = tswap32(vptr[0]);
 731             void *target_addr = (void *)tswap32(vptr[1]);
 732             socklen_t addrlen = tswap32(vptr[2]);
 733             void *addr = alloca(addrlen);
 734
 735             target_to_host_sockaddr(addr, target_addr, addrlen);
 736             ret = get_errno(bind(sockfd, addr, addrlen));
 737         }
 738         break;
 739     case SOCKOP_connect:
 740         {
 741             int sockfd = tswap32(vptr[0]);
 742             void *target_addr = (void *)tswap32(vptr[1]);
 743             socklen_t addrlen = tswap32(vptr[2]);
 744             void *addr = alloca(addrlen);
 745
 746             target_to_host_sockaddr(addr, target_addr, addrlen);
 747             ret = get_errno(connect(sockfd, addr, addrlen));
 748         }
 749         break;
 750     case SOCKOP_listen:
 751         {
 752             int sockfd = tswap32(vptr[0]);
 753             int backlog = tswap32(vptr[1]);
 754
 755             ret = get_errno(listen(sockfd, backlog));
 756         }
 757         break;
 758     case SOCKOP_accept:
 759         {
 760             int sockfd = tswap32(vptr[0]);
 761             void *target_addr = (void *)tswap32(vptr[1]);
 762             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 763             socklen_t addrlen = tswap32(*target_addrlen);
 764             void *addr = alloca(addrlen);
 765
 766             ret = get_errno(accept(sockfd, addr, &addrlen));
 767             if (!is_error(ret)) {
 768                 host_to_target_sockaddr(target_addr, addr, addrlen);
 769                 *target_addrlen = tswap32(addrlen);
 770             }
 771         }
 772         break;
 773     case SOCKOP_getsockname:
 774         {
 775             int sockfd = tswap32(vptr[0]);
 776             void *target_addr = (void *)tswap32(vptr[1]);
 777             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 778             socklen_t addrlen = tswap32(*target_addrlen);
 779             void *addr = alloca(addrlen);
 780
 781             ret = get_errno(getsockname(sockfd, addr, &addrlen));
 782             if (!is_error(ret)) {
 783                 host_to_target_sockaddr(target_addr, addr, addrlen);
 784                 *target_addrlen = tswap32(addrlen);
 785             }
 786         }
 787         break;
 788     case SOCKOP_getpeername:
 789         {
 790             int sockfd = tswap32(vptr[0]);
 791             void *target_addr = (void *)tswap32(vptr[1]);
 792             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 793             socklen_t addrlen = tswap32(*target_addrlen);
 794             void *addr = alloca(addrlen);
 795
 796             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 797             if (!is_error(ret)) {
 798                 host_to_target_sockaddr(target_addr, addr, addrlen);
 799                 *target_addrlen = tswap32(addrlen);
 800             }
 801         }
 802         break;
 803     case SOCKOP_socketpair:
 804         {
 805             int domain = tswap32(vptr[0]);
 806             int type = tswap32(vptr[1]);
 807             int protocol = tswap32(vptr[2]);
 808             int32_t *target_tab = (void *)tswap32(vptr[3]);
 809             int tab[2];
 810
 811             ret = get_errno(socketpair(domain, type, protocol, tab));
 812             if (!is_error(ret)) {
 813                 target_tab[0] = tswap32(tab[0]);
 814                 target_tab[1] = tswap32(tab[1]);
 815             }
 816         }
 817         break;
 818     case SOCKOP_send:
 819         {
 820             int sockfd = tswap32(vptr[0]);
 821             void *msg = (void *)tswap32(vptr[1]);
 822             size_t len = tswap32(vptr[2]);
 823             int flags = tswap32(vptr[3]);
 824
 825             ret = get_errno(send(sockfd, msg, len, flags));
 826         }
 827         break;
 828     case SOCKOP_recv:
 829         {
 830             int sockfd = tswap32(vptr[0]);
 831             void *msg = (void *)tswap32(vptr[1]);
 832             size_t len = tswap32(vptr[2]);
 833             int flags = tswap32(vptr[3]);
 834
 835             ret = get_errno(recv(sockfd, msg, len, flags));
 836         }
 837         break;
 838     case SOCKOP_sendto:
 839         {
 840             int sockfd = tswap32(vptr[0]);
 841             void *msg = (void *)tswap32(vptr[1]);
 842             size_t len = tswap32(vptr[2]);
 843             int flags = tswap32(vptr[3]);
 844             void *target_addr = (void *)tswap32(vptr[4]);
 845             socklen_t addrlen = tswap32(vptr[5]);
 846             void *addr = alloca(addrlen);
 847
 848             target_to_host_sockaddr(addr, target_addr, addrlen);
 849             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 850         }
 851         break;
 852     case SOCKOP_recvfrom:
 853         {
 854             int sockfd = tswap32(vptr[0]);
 855             void *msg = (void *)tswap32(vptr[1]);
 856             size_t len = tswap32(vptr[2]);
 857             int flags = tswap32(vptr[3]);
 858             void *target_addr = (void *)tswap32(vptr[4]);
 859             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 860             socklen_t addrlen = tswap32(*target_addrlen);
 861             void *addr = alloca(addrlen);
 862
 863             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 864             if (!is_error(ret)) {
 865                 host_to_target_sockaddr(target_addr, addr, addrlen);
 866                 *target_addrlen = tswap32(addrlen);
 867             }
 868         }
 869         break;
 870     case SOCKOP_shutdown:
 871         {
 872             int sockfd = tswap32(vptr[0]);
 873             int how = tswap32(vptr[1]);
 874
 875             ret = get_errno(shutdown(sockfd, how));
 876         }
 877         break;
 878     case SOCKOP_sendmsg:
 879     case SOCKOP_recvmsg:
 880         {
 881             int fd;
 882             struct target_msghdr *msgp;
 883             struct msghdr msg;
 884             int flags, count, i;
 885             struct iovec *vec;
 886             struct target_iovec *target_vec;
 887
 888             msgp = (void *)tswap32(vptr[1]);
 889             msg.msg_name = (void *)tswapl(msgp->msg_name);
 890             msg.msg_namelen = tswapl(msgp->msg_namelen);
 891             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 892             msg.msg_control = alloca(msg.msg_controllen);
 893             msg.msg_flags = tswap32(msgp->msg_flags);
 894
 895             count = tswapl(msgp->msg_iovlen);
 896             vec = alloca(count * sizeof(struct iovec));
 897             target_vec = (void *)tswapl(msgp->msg_iov);
 898             for(i = 0;i < count; i++) {
 899                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 900                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 901             }
 902             msg.msg_iovlen = count;
 903             msg.msg_iov = vec;
 904
 905             fd = tswap32(vptr[0]);
 906             flags = tswap32(vptr[2]);
 907             if (num == SOCKOP_sendmsg) {
 908                 target_to_host_cmsg(&msg, msgp);
 909                 ret = get_errno(sendmsg(fd, &msg, flags));
 910             } else {
 911                 ret = get_errno(recvmsg(fd, &msg, flags));
 912                 if (!is_error(ret))
 913                   host_to_target_cmsg(msgp, &msg);
 914             }
 915         }
 916         break;
 917     case SOCKOP_setsockopt:
 918         {
 919             int sockfd = tswap32(vptr[0]);
 920             int level = tswap32(vptr[1]);
 921             int optname = tswap32(vptr[2]);
 922             void *optval = (void *)tswap32(vptr[3]);
 923             socklen_t optlen = tswap32(vptr[4]);
 924
 925             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 926         }
 927         break;
 928     case SOCKOP_getsockopt:
 929         {
 930             int sockfd = tswap32(vptr[0]);
 931             int level = tswap32(vptr[1]);
 932             int optname = tswap32(vptr[2]);
 933             void *optval = (void *)tswap32(vptr[3]);
 934             uint32_t *poptlen = (void *)tswap32(vptr[4]);
 935
 936             ret = do_getsockopt(sockfd, level, optname, optval, poptlen);
 937         }
 938         break;
 939     default:
 940         gemu_log("Unsupported socketcall: %d\n", num);
 941         ret = -ENOSYS;
 942         break;
 943     }
 944     return ret;
 945 }
 946
 947
 948 #define N_SHM_REGIONS   32
 949
 950 static struct shm_region {
 951     uint32_t    start;
 952     uint32_t    size;
 953 } shm_regions[N_SHM_REGIONS];
 954
 955 static long do_ipc(long call, long first, long second, long third,
 956                    long ptr, long fifth)
 957 {
 958     int version;
 959     long ret = 0;
 960     unsigned long raddr;
 961     struct shmid_ds shm_info;
 962     int i;
 963
 964     version = call >> 16;
 965     call &= 0xffff;
 966
 967     switch (call) {
 968     case IPCOP_shmat:
 969         /* SHM_* flags are the same on all linux platforms */
 970         ret = get_errno((long) shmat(first, (void *) ptr, second));
 971         if (is_error(ret))
 972             break;
 973         raddr = ret;
 974         /* find out the length of the shared memory segment */
 975
 976         ret = get_errno(shmctl(first, IPC_STAT, &shm_info));
 977         if (is_error(ret)) {
 978             /* can't get length, bail out */
 979             shmdt((void *) raddr);
 980             break;
 981         }
 982         page_set_flags(raddr, raddr + shm_info.shm_segsz,
 983                        PAGE_VALID | PAGE_READ |
 984                        ((second & SHM_RDONLY)? 0: PAGE_WRITE));
 985         for (i = 0; i < N_SHM_REGIONS; ++i) {
 986             if (shm_regions[i].start == 0) {
 987                 shm_regions[i].start = raddr;
 988                 shm_regions[i].size = shm_info.shm_segsz;
 989                 break;
 990             }
 991         }
 992         if (put_user(raddr, (uint32_t *)third))
 993             return -EFAULT;
 994         ret = 0;
 995         break;
 996     case IPCOP_shmdt:
 997         for (i = 0; i < N_SHM_REGIONS; ++i) {
 998             if (shm_regions[i].start == ptr) {
 999                 shm_regions[i].start = 0;
1000                 page_set_flags(ptr, shm_regions[i].size, 0);
1001                 break;
1002             }
1003         }
1004         ret = get_errno(shmdt((void *) ptr));
1005         break;
1006
1007     case IPCOP_shmget:
1008         /* IPC_* flag values are the same on all linux platforms */
1009         ret = get_errno(shmget(first, second, third));
1010         break;
1011
1012         /* IPC_* and SHM_* command values are the same on all linux platforms */
1013     case IPCOP_shmctl:
1014         switch(second) {
1015         case IPC_RMID:
1016         case SHM_LOCK:
1017         case SHM_UNLOCK:
1018             ret = get_errno(shmctl(first, second, NULL));
1019             break;
1020         default:
1021             goto unimplemented;
1022         }
1023         break;
1024     default:
1025     unimplemented:
1026         gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version);
1027         ret = -ENOSYS;
1028         break;
1029     }
1030     return ret;
1031 }
1032
1033 /* kernel structure types definitions */
1034 #define IFNAMSIZ        16
1035
1036 #define STRUCT(name, list...) STRUCT_ ## name,
1037 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
1038 enum {
1039 #include "syscall_types.h"
1040 };
1041 #undef STRUCT
1042 #undef STRUCT_SPECIAL
1043
1044 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
1045 #define STRUCT_SPECIAL(name)
1046 #include "syscall_types.h"
1047 #undef STRUCT
1048 #undef STRUCT_SPECIAL
1049
1050 typedef struct IOCTLEntry {
1051     unsigned int target_cmd;
1052     unsigned int host_cmd;
1053     const char *name;
1054     int access;
1055     const argtype arg_type[5];
1056 } IOCTLEntry;
1057
1058 #define IOC_R 0x0001
1059 #define IOC_W 0x0002
1060 #define IOC_RW (IOC_R | IOC_W)
1061
1062 #define MAX_STRUCT_SIZE 4096
1063
1064 IOCTLEntry ioctl_entries[] = {
1065 #define IOCTL(cmd, access, types...) \
1066     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
1067 #include "ioctls.h"
1068     { 0, 0, },
1069 };
1070
1071 static long do_ioctl(long fd, long cmd, long arg)
1072 {
1073     const IOCTLEntry *ie;
1074     const argtype *arg_type;
1075     long ret;
1076     uint8_t buf_temp[MAX_STRUCT_SIZE];
1077
1078     ie = ioctl_entries;
1079     for(;;) {
1080         if (ie->target_cmd == 0) {
1081             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
1082             return -ENOSYS;
1083         }
1084         if (ie->target_cmd == cmd)
1085             break;
1086         ie++;
1087     }
1088     arg_type = ie->arg_type;
1089 #if defined(DEBUG)
1090     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
1091 #endif
1092     switch(arg_type[0]) {
1093     case TYPE_NULL:
1094         /* no argument */
1095         ret = get_errno(ioctl(fd, ie->host_cmd));
1096         break;
1097     case TYPE_PTRVOID:
1098     case TYPE_INT:
1099         /* int argment */
1100         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
1101         break;
1102     case TYPE_PTR:
1103         arg_type++;
1104         switch(ie->access) {
1105         case IOC_R:
1106             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1107             if (!is_error(ret)) {
1108                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
1109             }
1110             break;
1111         case IOC_W:
1112             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
1113             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1114             break;
1115         default:
1116         case IOC_RW:
1117             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
1118             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1119             if (!is_error(ret)) {
1120                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
1121             }
1122             break;
1123         }
1124         break;
1125     default:
1126         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
1127         ret = -ENOSYS;
1128         break;
1129     }
1130     return ret;
1131 }
1132
1133 bitmask_transtbl iflag_tbl[] = {
1134         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
1135         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
1136         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
1137         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
1138         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
1139         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
1140         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
1141         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
1142         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
1143         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
1144         { TARGET_IXON, TARGET_IXON, IXON, IXON },
1145         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
1146         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
1147         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
1148         { 0, 0, 0, 0 }
1149 };
1150
1151 bitmask_transtbl oflag_tbl[] = {
1152         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
1153         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
1154         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
1155         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
1156         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
1157         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
1158         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
1159         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
1160         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
1161         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
1162         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
1163         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
1164         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
1165         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
1166         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
1167         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
1168         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
1169         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
1170         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
1171         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
1172         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
1173         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
1174         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
1175         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
1176         { 0, 0, 0, 0 }
1177 };
1178
1179 bitmask_transtbl cflag_tbl[] = {
1180         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
1181         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
1182         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
1183         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
1184         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
1185         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
1186         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
1187         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
1188         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
1189         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
1190         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
1191         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
1192         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
1193         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
1194         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
1195         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
1196         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
1197         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
1198         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
1199         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
1200         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
1201         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
1202         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
1203         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
1204         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
1205         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
1206         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
1207         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
1208         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
1209         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
1210         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
1211         { 0, 0, 0, 0 }
1212 };
1213
1214 bitmask_transtbl lflag_tbl[] = {
1215         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
1216         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
1217         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
1218         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
1219         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
1220         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
1221         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
1222         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
1223         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
1224         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
1225         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
1226         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
1227         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
1228         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
1229         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
1230         { 0, 0, 0, 0 }
1231 };
1232
1233 static void target_to_host_termios (void *dst, const void *src)
1234 {
1235     struct host_termios *host = dst;
1236     const struct target_termios *target = src;
1237
1238     host->c_iflag =
1239         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
1240     host->c_oflag =
1241         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
1242     host->c_cflag =
1243         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
1244     host->c_lflag =
1245         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
1246     host->c_line = target->c_line;
1247
1248     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
1249     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
1250     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
1251     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
1252     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
1253     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
1254     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
1255     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
1256     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
1257     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
1258     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
1259     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
1260     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
1261     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
1262     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
1263     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
1264     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
1265 }
1266
1267 static void host_to_target_termios (void *dst, const void *src)
1268 {
1269     struct target_termios *target = dst;
1270     const struct host_termios *host = src;
1271
1272     target->c_iflag =
1273         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
1274     target->c_oflag =
1275         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
1276     target->c_cflag =
1277         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
1278     target->c_lflag =
1279         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
1280     target->c_line = host->c_line;
1281
1282     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
1283     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
1284     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
1285     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
1286     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
1287     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
1288     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
1289     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
1290     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
1291     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
1292     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
1293     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
1294     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
1295     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
1296     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
1297     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
1298     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
1299 }
1300
1301 StructEntry struct_termios_def = {
1302     .convert = { host_to_target_termios, target_to_host_termios },
1303     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
1304     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
1305 };
1306
1307 static bitmask_transtbl mmap_flags_tbl[] = {
1308         { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
1309         { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
1310         { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
1311         { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
1312         { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
1313         { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
1314         { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
1315         { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
1316         { 0, 0, 0, 0 }
1317 };
1318
1319 static bitmask_transtbl fcntl_flags_tbl[] = {
1320         { TARGET_O_ACCMODE,   TARGET_O_WRONLY,    O_ACCMODE,   O_WRONLY,    },
1321         { TARGET_O_ACCMODE,   TARGET_O_RDWR,      O_ACCMODE,   O_RDWR,      },
1322         { TARGET_O_CREAT,     TARGET_O_CREAT,     O_CREAT,     O_CREAT,     },
1323         { TARGET_O_EXCL,      TARGET_O_EXCL,      O_EXCL,      O_EXCL,      },
1324         { TARGET_O_NOCTTY,    TARGET_O_NOCTTY,    O_NOCTTY,    O_NOCTTY,    },
1325         { TARGET_O_TRUNC,     TARGET_O_TRUNC,     O_TRUNC,     O_TRUNC,     },
1326         { TARGET_O_APPEND,    TARGET_O_APPEND,    O_APPEND,    O_APPEND,    },
1327         { TARGET_O_NONBLOCK,  TARGET_O_NONBLOCK,  O_NONBLOCK,  O_NONBLOCK,  },
1328         { TARGET_O_SYNC,      TARGET_O_SYNC,      O_SYNC,      O_SYNC,      },
1329         { TARGET_FASYNC,      TARGET_FASYNC,      FASYNC,      FASYNC,      },
1330         { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
1331         { TARGET_O_NOFOLLOW,  TARGET_O_NOFOLLOW,  O_NOFOLLOW,  O_NOFOLLOW,  },
1332         { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
1333 #if defined(O_DIRECT)
1334         { TARGET_O_DIRECT,    TARGET_O_DIRECT,    O_DIRECT,    O_DIRECT,    },
1335 #endif
1336         { 0, 0, 0, 0 }
1337 };
1338
1339 #if defined(TARGET_I386)
1340
1341 /* NOTE: there is really one LDT for all the threads */
1342 uint8_t *ldt_table;
1343
1344 static int read_ldt(void *ptr, unsigned long bytecount)
1345 {
1346     int size;
1347
1348     if (!ldt_table)
1349         return 0;
1350     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
1351     if (size > bytecount)
1352         size = bytecount;
1353     memcpy(ptr, ldt_table, size);
1354     return size;
1355 }
1356
1357 /* XXX: add locking support */
1358 static int write_ldt(CPUX86State *env,
1359                      void *ptr, unsigned long bytecount, int oldmode)
1360 {
1361     struct target_modify_ldt_ldt_s ldt_info;
1362     int seg_32bit, contents, read_exec_only, limit_in_pages;
1363     int seg_not_present, useable;
1364     uint32_t *lp, entry_1, entry_2;
1365
1366     if (bytecount != sizeof(ldt_info))
1367         return -EINVAL;
1368     memcpy(&ldt_info, ptr, sizeof(ldt_info));
1369     tswap32s(&ldt_info.entry_number);
1370     tswapls((long *)&ldt_info.base_addr);
1371     tswap32s(&ldt_info.limit);
1372     tswap32s(&ldt_info.flags);
1373
1374     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
1375         return -EINVAL;
1376     seg_32bit = ldt_info.flags & 1;
1377     contents = (ldt_info.flags >> 1) & 3;
1378     read_exec_only = (ldt_info.flags >> 3) & 1;
1379     limit_in_pages = (ldt_info.flags >> 4) & 1;
1380     seg_not_present = (ldt_info.flags >> 5) & 1;
1381     useable = (ldt_info.flags >> 6) & 1;
1382
1383     if (contents == 3) {
1384         if (oldmode)
1385             return -EINVAL;
1386         if (seg_not_present == 0)
1387             return -EINVAL;
1388     }
1389     /* allocate the LDT */
1390     if (!ldt_table) {
1391         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1392         if (!ldt_table)
1393             return -ENOMEM;
1394         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1395         env->ldt.base = (long)ldt_table;
1396         env->ldt.limit = 0xffff;
1397     }
1398
1399     /* NOTE: same code as Linux kernel */
1400     /* Allow LDTs to be cleared by the user. */
1401     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1402         if (oldmode ||
1403             (contents == 0              &&
1404              read_exec_only == 1        &&
1405              seg_32bit == 0             &&
1406              limit_in_pages == 0        &&
1407              seg_not_present == 1       &&
1408              useable == 0 )) {
1409             entry_1 = 0;
1410             entry_2 = 0;
1411             goto install;
1412         }
1413     }
1414
1415     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1416         (ldt_info.limit & 0x0ffff);
1417     entry_2 = (ldt_info.base_addr & 0xff000000) |
1418         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1419         (ldt_info.limit & 0xf0000) |
1420         ((read_exec_only ^ 1) << 9) |
1421         (contents << 10) |
1422         ((seg_not_present ^ 1) << 15) |
1423         (seg_32bit << 22) |
1424         (limit_in_pages << 23) |
1425         0x7000;
1426     if (!oldmode)
1427         entry_2 |= (useable << 20);
1428
1429     /* Install the new entry ...  */
1430 install:
1431     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1432     lp[0] = tswap32(entry_1);
1433     lp[1] = tswap32(entry_2);
1434     return 0;
1435 }
1436
1437 /* specific and weird i386 syscalls */
1438 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1439 {
1440     int ret = -ENOSYS;
1441
1442     switch (func) {
1443     case 0:
1444         ret = read_ldt(ptr, bytecount);
1445         break;
1446     case 1:
1447         ret = write_ldt(env, ptr, bytecount, 1);
1448         break;
1449     case 0x11:
1450         ret = write_ldt(env, ptr, bytecount, 0);
1451         break;
1452     }
1453     return ret;
1454 }
1455
1456 #endif /* defined(TARGET_I386) */
1457
1458 /* this stack is the equivalent of the kernel stack associated with a
1459    thread/process */
1460 #define NEW_STACK_SIZE 8192
1461
1462 static int clone_func(void *arg)
1463 {
1464     CPUState *env = arg;
1465     cpu_loop(env);
1466     /* never exits */
1467     return 0;
1468 }
1469
1470 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
1471 {
1472     int ret;
1473     TaskState *ts;
1474     uint8_t *new_stack;
1475     CPUState *new_env;
1476
1477     if (flags & CLONE_VM) {
1478         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1479         memset(ts, 0, sizeof(TaskState));
1480         new_stack = ts->stack;
1481         ts->used = 1;
1482         /* add in task state list */
1483         ts->next = first_task_state;
1484         first_task_state = ts;
1485         /* we create a new CPU instance. */
1486         new_env = cpu_init();
1487         memcpy(new_env, env, sizeof(CPUState));
1488 #if defined(TARGET_I386)
1489         if (!newsp)
1490             newsp = env->regs[R_ESP];
1491         new_env->regs[R_ESP] = newsp;
1492         new_env->regs[R_EAX] = 0;
1493 #elif defined(TARGET_ARM)
1494         if (!newsp)
1495             newsp = env->regs[13];
1496         new_env->regs[13] = newsp;
1497         new_env->regs[0] = 0;
1498 #elif defined(TARGET_SPARC)
1499         printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
1500 #elif defined(TARGET_PPC)
1501         if (!newsp)
1502             newsp = env->gpr[1];
1503         new_env->gpr[1] = newsp;
1504         {
1505             int i;
1506             for (i = 7; i < 32; i++)
1507                 new_env->gpr[i] = 0;
1508         }
1509 #else
1510 #error unsupported target CPU
1511 #endif
1512         new_env->opaque = ts;
1513 #ifdef __ia64__
1514         ret = clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1515 #else
1516         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1517 #endif
1518     } else {
1519         /* if no CLONE_VM, we consider it is a fork */
1520         if ((flags & ~CSIGNAL) != 0)
1521             return -EINVAL;
1522         ret = fork();
1523     }
1524     return ret;
1525 }
1526
1527 static long do_fcntl(int fd, int cmd, unsigned long arg)
1528 {
1529     struct flock fl;
1530     struct target_flock *target_fl = (void *)arg;
1531     long ret;
1532
1533     switch(cmd) {
1534     case TARGET_F_GETLK:
1535         ret = fcntl(fd, cmd, &fl);
1536         if (ret == 0) {
1537             target_fl->l_type = tswap16(fl.l_type);
1538             target_fl->l_whence = tswap16(fl.l_whence);
1539             target_fl->l_start = tswapl(fl.l_start);
1540             target_fl->l_len = tswapl(fl.l_len);
1541             target_fl->l_pid = tswapl(fl.l_pid);
1542         }
1543         break;
1544
1545     case TARGET_F_SETLK:
1546     case TARGET_F_SETLKW:
1547         fl.l_type = tswap16(target_fl->l_type);
1548         fl.l_whence = tswap16(target_fl->l_whence);
1549         fl.l_start = tswapl(target_fl->l_start);
1550         fl.l_len = tswapl(target_fl->l_len);
1551         fl.l_pid = tswapl(target_fl->l_pid);
1552         ret = fcntl(fd, cmd, &fl);
1553         break;
1554
1555     case TARGET_F_GETLK64:
1556     case TARGET_F_SETLK64:
1557     case TARGET_F_SETLKW64:
1558         ret = -1;
1559         errno = EINVAL;
1560         break;
1561
1562     case F_GETFL:
1563         ret = fcntl(fd, cmd, arg);
1564         ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
1565         break;
1566
1567     case F_SETFL:
1568         ret = fcntl(fd, cmd, target_to_host_bitmask(arg, fcntl_flags_tbl));
1569         break;
1570
1571     default:
1572         ret = fcntl(fd, cmd, arg);
1573         break;
1574     }
1575     return ret;
1576 }
1577
1578 #ifdef USE_UID16
1579
1580 static inline int high2lowuid(int uid)
1581 {
1582     if (uid > 65535)
1583         return 65534;
1584     else
1585         return uid;
1586 }
1587
1588 static inline int high2lowgid(int gid)
1589 {
1590     if (gid > 65535)
1591         return 65534;
1592     else
1593         return gid;
1594 }
1595
1596 static inline int low2highuid(int uid)
1597 {
1598     if ((int16_t)uid == -1)
1599         return -1;
1600     else
1601         return uid;
1602 }
1603
1604 static inline int low2highgid(int gid)
1605 {
1606     if ((int16_t)gid == -1)
1607         return -1;
1608     else
1609         return gid;
1610 }
1611
1612 #endif /* USE_UID16 */
1613
1614 void syscall_init(void)
1615 {
1616     IOCTLEntry *ie;
1617     const argtype *arg_type;
1618     int size;
1619
1620 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1621 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1622 #include "syscall_types.h"
1623 #undef STRUCT
1624 #undef STRUCT_SPECIAL
1625
1626     /* we patch the ioctl size if necessary. We rely on the fact that
1627        no ioctl has all the bits at '1' in the size field */
1628     ie = ioctl_entries;
1629     while (ie->target_cmd != 0) {
1630         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
1631             TARGET_IOC_SIZEMASK) {
1632             arg_type = ie->arg_type;
1633             if (arg_type[0] != TYPE_PTR) {
1634                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
1635                         ie->target_cmd);
1636                 exit(1);
1637             }
1638             arg_type++;
1639             size = thunk_type_size(arg_type, 0);
1640             ie->target_cmd = (ie->target_cmd &
1641                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
1642                 (size << TARGET_IOC_SIZESHIFT);
1643         }
1644         /* automatic consistency check if same arch */
1645 #if defined(__i386__) && defined(TARGET_I386)
1646         if (ie->target_cmd != ie->host_cmd) {
1647             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
1648                     ie->target_cmd, ie->host_cmd);
1649         }
1650 #endif
1651         ie++;
1652     }
1653 }
1654
1655 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1656                 long arg4, long arg5, long arg6)
1657 {
1658     long ret;
1659     struct stat st;
1660     struct kernel_statfs *stfs;
1661
1662 #ifdef DEBUG
1663     gemu_log("syscall %d", num);
1664 #endif
1665     switch(num) {
1666     case TARGET_NR_exit:
1667 #ifdef HAVE_GPROF
1668         _mcleanup();
1669 #endif
1670         gdb_exit(cpu_env, arg1);
1671         /* XXX: should free thread stack and CPU env */
1672         _exit(arg1);
1673         ret = 0; /* avoid warning */
1674         break;
1675     case TARGET_NR_read:
1676         page_unprotect_range((void *)arg2, arg3);
1677         ret = get_errno(read(arg1, (void *)arg2, arg3));
1678         break;
1679     case TARGET_NR_write:
1680         ret = get_errno(write(arg1, (void *)arg2, arg3));
1681         break;
1682     case TARGET_NR_open:
1683         ret = get_errno(open(path((const char *)arg1),
1684                              target_to_host_bitmask(arg2, fcntl_flags_tbl),
1685                              arg3));
1686         break;
1687     case TARGET_NR_close:
1688         ret = get_errno(close(arg1));
1689         break;
1690     case TARGET_NR_brk:
1691         ret = do_brk((char *)arg1);
1692         break;
1693     case TARGET_NR_fork:
1694         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1695         break;
1696     case TARGET_NR_waitpid:
1697         {
1698             int *status = (int *)arg2;
1699             ret = get_errno(waitpid(arg1, status, arg3));
1700             if (!is_error(ret) && status)
1701                 tswapls((long *)&status);
1702         }
1703         break;
1704     case TARGET_NR_creat:
1705         ret = get_errno(creat((const char *)arg1, arg2));
1706         break;
1707     case TARGET_NR_link:
1708         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1709         break;
1710     case TARGET_NR_unlink:
1711         ret = get_errno(unlink((const char *)arg1));
1712         break;
1713     case TARGET_NR_execve:
1714         {
1715             char **argp, **envp;
1716             int argc, envc;
1717             uint32_t *p;
1718             char **q;
1719
1720             argc = 0;
1721             for (p = (void *)arg2; *p; p++)
1722                 argc++;
1723             envc = 0;
1724             for (p = (void *)arg3; *p; p++)
1725                 envc++;
1726
1727             argp = alloca((argc + 1) * sizeof(void *));
1728             envp = alloca((envc + 1) * sizeof(void *));
1729
1730             for (p = (void *)arg2, q = argp; *p; p++, q++)
1731                 *q = (void *)tswap32(*p);
1732             *q = NULL;
1733
1734             for (p = (void *)arg3, q = envp; *p; p++, q++)
1735                 *q = (void *)tswap32(*p);
1736             *q = NULL;
1737
1738             ret = get_errno(execve((const char *)arg1, argp, envp));
1739         }
1740         break;
1741     case TARGET_NR_chdir:
1742         ret = get_errno(chdir((const char *)arg1));
1743         break;
1744 #ifdef TARGET_NR_time
1745     case TARGET_NR_time:
1746         {
1747             int *time_ptr = (int *)arg1;
1748             ret = get_errno(time((time_t *)time_ptr));
1749             if (!is_error(ret) && time_ptr)
1750                 tswap32s(time_ptr);
1751         }
1752         break;
1753 #endif
1754     case TARGET_NR_mknod:
1755         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1756         break;
1757     case TARGET_NR_chmod:
1758         ret = get_errno(chmod((const char *)arg1, arg2));
1759         break;
1760 #ifdef TARGET_NR_break
1761     case TARGET_NR_break:
1762         goto unimplemented;
1763 #endif
1764 #ifdef TARGET_NR_oldstat
1765     case TARGET_NR_oldstat:
1766         goto unimplemented;
1767 #endif
1768     case TARGET_NR_lseek:
1769         ret = get_errno(lseek(arg1, arg2, arg3));
1770         break;
1771     case TARGET_NR_getpid:
1772         ret = get_errno(getpid());
1773         break;
1774     case TARGET_NR_mount:
1775         /* need to look at the data field */
1776         goto unimplemented;
1777     case TARGET_NR_umount:
1778         ret = get_errno(umount((const char *)arg1));
1779         break;
1780     case TARGET_NR_stime:
1781         {
1782             int *time_ptr = (int *)arg1;
1783             if (time_ptr)
1784                 tswap32s(time_ptr);
1785             ret = get_errno(stime((time_t *)time_ptr));
1786         }
1787         break;
1788     case TARGET_NR_ptrace:
1789         goto unimplemented;
1790     case TARGET_NR_alarm:
1791         ret = alarm(arg1);
1792         break;
1793 #ifdef TARGET_NR_oldfstat
1794     case TARGET_NR_oldfstat:
1795         goto unimplemented;
1796 #endif
1797     case TARGET_NR_pause:
1798         ret = get_errno(pause());
1799         break;
1800     case TARGET_NR_utime:
1801         {
1802             struct utimbuf tbuf, *tbuf1;
1803             struct target_utimbuf *target_tbuf = (void *)arg2;
1804             if (target_tbuf) {
1805                 get_user(tbuf.actime, &target_tbuf->actime);
1806                 get_user(tbuf.modtime, &target_tbuf->modtime);
1807                 tbuf1 = &tbuf;
1808             } else {
1809                 tbuf1 = NULL;
1810             }
1811             ret = get_errno(utime((const char *)arg1, tbuf1));
1812         }
1813         break;
1814     case TARGET_NR_utimes:
1815         {
1816             struct target_timeval *target_tvp = (struct target_timeval *)arg2;
1817             struct timeval *tvp, tv[2];
1818             if (target_tvp) {
1819                 target_to_host_timeval(&tv[0], &target_tvp[0]);
1820                 target_to_host_timeval(&tv[1], &target_tvp[1]);
1821                 tvp = tv;
1822             } else {
1823                 tvp = NULL;
1824             }
1825             ret = get_errno(utimes((const char *)arg1, tvp));
1826         }
1827         break;
1828 #ifdef TARGET_NR_stty
1829     case TARGET_NR_stty:
1830         goto unimplemented;
1831 #endif
1832 #ifdef TARGET_NR_gtty
1833     case TARGET_NR_gtty:
1834         goto unimplemented;
1835 #endif
1836     case TARGET_NR_access:
1837         ret = get_errno(access((const char *)arg1, arg2));
1838         break;
1839     case TARGET_NR_nice:
1840         ret = get_errno(nice(arg1));
1841         break;
1842 #ifdef TARGET_NR_ftime
1843     case TARGET_NR_ftime:
1844         goto unimplemented;
1845 #endif
1846     case TARGET_NR_sync:
1847         sync();
1848         ret = 0;
1849         break;
1850     case TARGET_NR_kill:
1851         ret = get_errno(kill(arg1, arg2));
1852         break;
1853     case TARGET_NR_rename:
1854         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1855         break;
1856     case TARGET_NR_mkdir:
1857         ret = get_errno(mkdir((const char *)arg1, arg2));
1858         break;
1859     case TARGET_NR_rmdir:
1860         ret = get_errno(rmdir((const char *)arg1));
1861         break;
1862     case TARGET_NR_dup:
1863         ret = get_errno(dup(arg1));
1864         break;
1865     case TARGET_NR_pipe:
1866         {
1867             int *pipe_ptr = (int *)arg1;
1868             ret = get_errno(pipe(pipe_ptr));
1869             if (!is_error(ret)) {
1870                 tswap32s(&pipe_ptr[0]);
1871                 tswap32s(&pipe_ptr[1]);
1872             }
1873         }
1874         break;
1875     case TARGET_NR_times:
1876         {
1877             struct target_tms *tmsp = (void *)arg1;
1878             struct tms tms;
1879             ret = get_errno(times(&tms));
1880             if (tmsp) {
1881                 tmsp->tms_utime = tswapl(host_to_target_clock_t(tms.tms_utime));
1882                 tmsp->tms_stime = tswapl(host_to_target_clock_t(tms.tms_stime));
1883                 tmsp->tms_cutime = tswapl(host_to_target_clock_t(tms.tms_cutime));
1884                 tmsp->tms_cstime = tswapl(host_to_target_clock_t(tms.tms_cstime));
1885             }
1886             if (!is_error(ret))
1887                 ret = host_to_target_clock_t(ret);
1888         }
1889         break;
1890 #ifdef TARGET_NR_prof
1891     case TARGET_NR_prof:
1892         goto unimplemented;
1893 #endif
1894     case TARGET_NR_signal:
1895         goto unimplemented;
1896
1897     case TARGET_NR_acct:
1898         goto unimplemented;
1899     case TARGET_NR_umount2:
1900         ret = get_errno(umount2((const char *)arg1, arg2));
1901         break;
1902 #ifdef TARGET_NR_lock
1903     case TARGET_NR_lock:
1904         goto unimplemented;
1905 #endif
1906     case TARGET_NR_ioctl:
1907         ret = do_ioctl(arg1, arg2, arg3);
1908         break;
1909     case TARGET_NR_fcntl:
1910         ret = get_errno(do_fcntl(arg1, arg2, arg3));
1911         break;
1912 #ifdef TARGET_NR_mpx
1913     case TARGET_NR_mpx:
1914         goto unimplemented;
1915 #endif
1916     case TARGET_NR_setpgid:
1917         ret = get_errno(setpgid(arg1, arg2));
1918         break;
1919 #ifdef TARGET_NR_ulimit
1920     case TARGET_NR_ulimit:
1921         goto unimplemented;
1922 #endif
1923 #ifdef TARGET_NR_oldolduname
1924     case TARGET_NR_oldolduname:
1925         goto unimplemented;
1926 #endif
1927     case TARGET_NR_umask:
1928         ret = get_errno(umask(arg1));
1929         break;
1930     case TARGET_NR_chroot:
1931         ret = get_errno(chroot((const char *)arg1));
1932         break;
1933     case TARGET_NR_ustat:
1934         goto unimplemented;
1935     case TARGET_NR_dup2:
1936         ret = get_errno(dup2(arg1, arg2));
1937         break;
1938     case TARGET_NR_getppid:
1939         ret = get_errno(getppid());
1940         break;
1941     case TARGET_NR_getpgrp:
1942         ret = get_errno(getpgrp());
1943         break;
1944     case TARGET_NR_setsid:
1945         ret = get_errno(setsid());
1946         break;
1947     case TARGET_NR_sigaction:
1948         {
1949             struct target_old_sigaction *old_act = (void *)arg2;
1950             struct target_old_sigaction *old_oact = (void *)arg3;
1951             struct target_sigaction act, oact, *pact;
1952             if (old_act) {
1953                 act._sa_handler = old_act->_sa_handler;
1954                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1955                 act.sa_flags = old_act->sa_flags;
1956                 act.sa_restorer = old_act->sa_restorer;
1957                 pact = &act;
1958             } else {
1959                 pact = NULL;
1960             }
1961             ret = get_errno(do_sigaction(arg1, pact, &oact));
1962             if (!is_error(ret) && old_oact) {
1963                 old_oact->_sa_handler = oact._sa_handler;
1964                 old_oact->sa_mask = oact.sa_mask.sig[0];
1965                 old_oact->sa_flags = oact.sa_flags;
1966                 old_oact->sa_restorer = oact.sa_restorer;
1967             }
1968         }
1969         break;
1970     case TARGET_NR_rt_sigaction:
1971         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1972         break;
1973     case TARGET_NR_sgetmask:
1974         {
1975             sigset_t cur_set;
1976             target_ulong target_set;
1977             sigprocmask(0, NULL, &cur_set);
1978             host_to_target_old_sigset(&target_set, &cur_set);
1979             ret = target_set;
1980         }
1981         break;
1982     case TARGET_NR_ssetmask:
1983         {
1984             sigset_t set, oset, cur_set;
1985             target_ulong target_set = arg1;
1986             sigprocmask(0, NULL, &cur_set);
1987             target_to_host_old_sigset(&set, &target_set);
1988             sigorset(&set, &set, &cur_set);
1989             sigprocmask(SIG_SETMASK, &set, &oset);
1990             host_to_target_old_sigset(&target_set, &oset);
1991             ret = target_set;
1992         }
1993         break;
1994     case TARGET_NR_sigprocmask:
1995         {
1996             int how = arg1;
1997             sigset_t set, oldset, *set_ptr;
1998             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1999
2000             if (pset) {
2001                 switch(how) {
2002                 case TARGET_SIG_BLOCK:
2003                     how = SIG_BLOCK;
2004                     break;
2005                 case TARGET_SIG_UNBLOCK:
2006                     how = SIG_UNBLOCK;
2007                     break;
2008                 case TARGET_SIG_SETMASK:
2009                     how = SIG_SETMASK;
2010                     break;
2011                 default:
2012                     ret = -EINVAL;
2013                     goto fail;
2014                 }
2015                 target_to_host_old_sigset(&set, pset);
2016                 set_ptr = &set;
2017             } else {
2018                 how = 0;
2019                 set_ptr = NULL;
2020             }
2021             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
2022             if (!is_error(ret) && poldset) {
2023                 host_to_target_old_sigset(poldset, &oldset);
2024             }
2025         }
2026         break;
2027     case TARGET_NR_rt_sigprocmask:
2028         {
2029             int how = arg1;
2030             sigset_t set, oldset, *set_ptr;
2031             target_sigset_t *pset = (void *)arg2;
2032             target_sigset_t *poldset = (void *)arg3;
2033
2034             if (pset) {
2035                 switch(how) {
2036                 case TARGET_SIG_BLOCK:
2037                     how = SIG_BLOCK;
2038                     break;
2039                 case TARGET_SIG_UNBLOCK:
2040                     how = SIG_UNBLOCK;
2041                     break;
2042                 case TARGET_SIG_SETMASK:
2043                     how = SIG_SETMASK;
2044                     break;
2045                 default:
2046                     ret = -EINVAL;
2047                     goto fail;
2048                 }
2049                 target_to_host_sigset(&set, pset);
2050                 set_ptr = &set;
2051             } else {
2052                 how = 0;
2053                 set_ptr = NULL;
2054             }
2055             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
2056             if (!is_error(ret) && poldset) {
2057                 host_to_target_sigset(poldset, &oldset);
2058             }
2059         }
2060         break;
2061     case TARGET_NR_sigpending:
2062         {
2063             sigset_t set;
2064             ret = get_errno(sigpending(&set));
2065             if (!is_error(ret)) {
2066                 host_to_target_old_sigset((target_ulong *)arg1, &set);
2067             }
2068         }
2069         break;
2070     case TARGET_NR_rt_sigpending:
2071         {
2072             sigset_t set;
2073             ret = get_errno(sigpending(&set));
2074             if (!is_error(ret)) {
2075                 host_to_target_sigset((target_sigset_t *)arg1, &set);
2076             }
2077         }
2078         break;
2079     case TARGET_NR_sigsuspend:
2080         {
2081             sigset_t set;
2082             target_to_host_old_sigset(&set, (target_ulong *)arg1);
2083             ret = get_errno(sigsuspend(&set));
2084         }
2085         break;
2086     case TARGET_NR_rt_sigsuspend:
2087         {
2088             sigset_t set;
2089             target_to_host_sigset(&set, (target_sigset_t *)arg1);
2090             ret = get_errno(sigsuspend(&set));
2091         }
2092         break;
2093     case TARGET_NR_rt_sigtimedwait:
2094         {
2095             target_sigset_t *target_set = (void *)arg1;
2096             target_siginfo_t *target_uinfo = (void *)arg2;
2097             struct target_timespec *target_uts = (void *)arg3;
2098             sigset_t set;
2099             struct timespec uts, *puts;
2100             siginfo_t uinfo;
2101
2102             target_to_host_sigset(&set, target_set);
2103             if (target_uts) {
2104                 puts = &uts;
2105                 puts->tv_sec = tswapl(target_uts->tv_sec);
2106                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
2107             } else {
2108                 puts = NULL;
2109             }
2110             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
2111             if (!is_error(ret) && target_uinfo) {
2112                 host_to_target_siginfo(target_uinfo, &uinfo);
2113             }
2114         }
2115         break;
2116     case TARGET_NR_rt_sigqueueinfo:
2117         {
2118             siginfo_t uinfo;
2119             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
2120             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
2121         }
2122         break;
2123     case TARGET_NR_sigreturn:
2124         /* NOTE: ret is eax, so not transcoding must be done */
2125         ret = do_sigreturn(cpu_env);
2126         break;
2127     case TARGET_NR_rt_sigreturn:
2128         /* NOTE: ret is eax, so not transcoding must be done */
2129         ret = do_rt_sigreturn(cpu_env);
2130         break;
2131     case TARGET_NR_sethostname:
2132         ret = get_errno(sethostname((const char *)arg1, arg2));
2133         break;
2134     case TARGET_NR_setrlimit:
2135         {
2136             /* XXX: convert resource ? */
2137             int resource = arg1;
2138             struct target_rlimit *target_rlim = (void *)arg2;
2139             struct rlimit rlim;
2140             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
2141             rlim.rlim_max = tswapl(target_rlim->rlim_max);
2142             ret = get_errno(setrlimit(resource, &rlim));
2143         }
2144         break;
2145     case TARGET_NR_getrlimit:
2146         {
2147             /* XXX: convert resource ? */
2148             int resource = arg1;
2149             struct target_rlimit *target_rlim = (void *)arg2;
2150             struct rlimit rlim;
2151
2152             ret = get_errno(getrlimit(resource, &rlim));
2153             if (!is_error(ret)) {
2154                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2155                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
2156             }
2157         }
2158         break;
2159     case TARGET_NR_getrusage:
2160         {
2161             struct rusage rusage;
2162             struct target_rusage *target_rusage = (void *)arg2;
2163             ret = get_errno(getrusage(arg1, &rusage));
2164             if (!is_error(ret)) {
2165                 host_to_target_rusage(target_rusage, &rusage);
2166             }
2167         }
2168         break;
2169     case TARGET_NR_gettimeofday:
2170         {
2171             struct target_timeval *target_tv = (void *)arg1;
2172             struct timeval tv;
2173             ret = get_errno(gettimeofday(&tv, NULL));
2174             if (!is_error(ret)) {
2175                 host_to_target_timeval(target_tv, &tv);
2176             }
2177         }
2178         break;
2179     case TARGET_NR_settimeofday:
2180         {
2181             struct target_timeval *target_tv = (void *)arg1;
2182             struct timeval tv;
2183             target_to_host_timeval(&tv, target_tv);
2184             ret = get_errno(settimeofday(&tv, NULL));
2185         }
2186         break;
2187     case TARGET_NR_select:
2188         {
2189             struct target_sel_arg_struct *sel = (void *)arg1;
2190             sel->n = tswapl(sel->n);
2191             sel->inp = tswapl(sel->inp);
2192             sel->outp = tswapl(sel->outp);
2193             sel->exp = tswapl(sel->exp);
2194             sel->tvp = tswapl(sel->tvp);
2195             ret = do_select(sel->n, (void *)sel->inp, (void *)sel->outp,
2196                             (void *)sel->exp, (void *)sel->tvp);
2197         }
2198         break;
2199     case TARGET_NR_symlink:
2200         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
2201         break;
2202 #ifdef TARGET_NR_oldlstat
2203     case TARGET_NR_oldlstat:
2204         goto unimplemented;
2205 #endif
2206     case TARGET_NR_readlink:
2207         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
2208         break;
2209     case TARGET_NR_uselib:
2210         goto unimplemented;
2211     case TARGET_NR_swapon:
2212         ret = get_errno(swapon((const char *)arg1, arg2));
2213         break;
2214     case TARGET_NR_reboot:
2215         goto unimplemented;
2216     case TARGET_NR_readdir:
2217         goto unimplemented;
2218     case TARGET_NR_mmap:
2219 #if defined(TARGET_I386) || defined(TARGET_ARM)
2220         {
2221             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
2222             vptr = (uint32_t *)arg1;
2223             v1 = tswap32(vptr[0]);
2224             v2 = tswap32(vptr[1]);
2225             v3 = tswap32(vptr[2]);
2226             v4 = tswap32(vptr[3]);
2227             v5 = tswap32(vptr[4]);
2228             v6 = tswap32(vptr[5]);
2229             ret = get_errno(target_mmap(v1, v2, v3,
2230                                         target_to_host_bitmask(v4, mmap_flags_tbl),
2231                                         v5, v6));
2232         }
2233 #else
2234         ret = get_errno(target_mmap(arg1, arg2, arg3,
2235                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
2236                                     arg5,
2237                                     arg6));
2238 #endif
2239         break;
2240 #ifdef TARGET_NR_mmap2
2241     case TARGET_NR_mmap2:
2242 #if defined(TARGET_SPARC)
2243 #define MMAP_SHIFT 12
2244 #else
2245 #define MMAP_SHIFT TARGET_PAGE_BITS
2246 #endif
2247         ret = get_errno(target_mmap(arg1, arg2, arg3,
2248                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
2249                                     arg5,
2250                                     arg6 << MMAP_SHIFT));
2251         break;
2252 #endif
2253     case TARGET_NR_munmap:
2254         ret = get_errno(target_munmap(arg1, arg2));
2255         break;
2256     case TARGET_NR_mprotect:
2257         ret = get_errno(target_mprotect(arg1, arg2, arg3));
2258         break;
2259     case TARGET_NR_mremap:
2260         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
2261         break;
2262     case TARGET_NR_msync:
2263         ret = get_errno(msync((void *)arg1, arg2, arg3));
2264         break;
2265     case TARGET_NR_mlock:
2266         ret = get_errno(mlock((void *)arg1, arg2));
2267         break;
2268     case TARGET_NR_munlock:
2269         ret = get_errno(munlock((void *)arg1, arg2));
2270         break;
2271     case TARGET_NR_mlockall:
2272         ret = get_errno(mlockall(arg1));
2273         break;
2274     case TARGET_NR_munlockall:
2275         ret = get_errno(munlockall());
2276         break;
2277     case TARGET_NR_truncate:
2278         ret = get_errno(truncate((const char *)arg1, arg2));
2279         break;
2280     case TARGET_NR_ftruncate:
2281         ret = get_errno(ftruncate(arg1, arg2));
2282         break;
2283     case TARGET_NR_fchmod:
2284         ret = get_errno(fchmod(arg1, arg2));
2285         break;
2286     case TARGET_NR_getpriority:
2287         ret = get_errno(getpriority(arg1, arg2));
2288         break;
2289     case TARGET_NR_setpriority:
2290         ret = get_errno(setpriority(arg1, arg2, arg3));
2291         break;
2292 #ifdef TARGET_NR_profil
2293     case TARGET_NR_profil:
2294         goto unimplemented;
2295 #endif
2296     case TARGET_NR_statfs:
2297         stfs = (void *)arg2;
2298         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
2299     convert_statfs:
2300         if (!is_error(ret)) {
2301             tswap32s(&stfs->f_type);
2302             tswap32s(&stfs->f_bsize);
2303             tswap32s(&stfs->f_blocks);
2304             tswap32s(&stfs->f_bfree);
2305             tswap32s(&stfs->f_bavail);
2306             tswap32s(&stfs->f_files);
2307             tswap32s(&stfs->f_ffree);
2308             tswap32s(&stfs->f_fsid.val[0]);
2309             tswap32s(&stfs->f_fsid.val[1]);
2310             tswap32s(&stfs->f_namelen);
2311         }
2312         break;
2313     case TARGET_NR_fstatfs:
2314         stfs = (void *)arg2;
2315         ret = get_errno(sys_fstatfs(arg1, stfs));
2316         goto convert_statfs;
2317 #ifdef TARGET_NR_ioperm
2318     case TARGET_NR_ioperm:
2319         goto unimplemented;
2320 #endif
2321     case TARGET_NR_socketcall:
2322         ret = do_socketcall(arg1, (int32_t *)arg2);
2323         break;
2324     case TARGET_NR_syslog:
2325         goto unimplemented;
2326     case TARGET_NR_setitimer:
2327         {
2328             struct target_itimerval *target_value = (void *)arg2;
2329             struct target_itimerval *target_ovalue = (void *)arg3;
2330             struct itimerval value, ovalue, *pvalue;
2331
2332             if (target_value) {
2333                 pvalue = &value;
2334                 target_to_host_timeval(&pvalue->it_interval,
2335                                        &target_value->it_interval);
2336                 target_to_host_timeval(&pvalue->it_value,
2337                                        &target_value->it_value);
2338             } else {
2339                 pvalue = NULL;
2340             }
2341             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
2342             if (!is_error(ret) && target_ovalue) {
2343                 host_to_target_timeval(&target_ovalue->it_interval,
2344                                        &ovalue.it_interval);
2345                 host_to_target_timeval(&target_ovalue->it_value,
2346                                        &ovalue.it_value);
2347             }
2348         }
2349         break;
2350     case TARGET_NR_getitimer:
2351         {
2352             struct target_itimerval *target_value = (void *)arg2;
2353             struct itimerval value;
2354
2355             ret = get_errno(getitimer(arg1, &value));
2356             if (!is_error(ret) && target_value) {
2357                 host_to_target_timeval(&target_value->it_interval,
2358                                        &value.it_interval);
2359                 host_to_target_timeval(&target_value->it_value,
2360                                        &value.it_value);
2361             }
2362         }
2363         break;
2364     case TARGET_NR_stat:
2365         ret = get_errno(stat(path((const char *)arg1), &st));
2366         goto do_stat;
2367     case TARGET_NR_lstat:
2368         ret = get_errno(lstat(path((const char *)arg1), &st));
2369         goto do_stat;
2370     case TARGET_NR_fstat:
2371         {
2372             ret = get_errno(fstat(arg1, &st));
2373         do_stat:
2374             if (!is_error(ret)) {
2375                 struct target_stat *target_st = (void *)arg2;
2376                 target_st->st_dev = tswap16(st.st_dev);
2377                 target_st->st_ino = tswapl(st.st_ino);
2378 #if defined(TARGET_PPC)
2379                 target_st->st_mode = tswapl(st.st_mode); /* XXX: check this */
2380                 target_st->st_uid = tswap32(st.st_uid);
2381                 target_st->st_gid = tswap32(st.st_gid);
2382 #else
2383                 target_st->st_mode = tswap16(st.st_mode);
2384                 target_st->st_uid = tswap16(st.st_uid);
2385                 target_st->st_gid = tswap16(st.st_gid);
2386 #endif
2387                 target_st->st_nlink = tswap16(st.st_nlink);
2388                 target_st->st_rdev = tswap16(st.st_rdev);
2389                 target_st->st_size = tswapl(st.st_size);
2390                 target_st->st_blksize = tswapl(st.st_blksize);
2391                 target_st->st_blocks = tswapl(st.st_blocks);
2392                 target_st->target_st_atime = tswapl(st.st_atime);
2393                 target_st->target_st_mtime = tswapl(st.st_mtime);
2394                 target_st->target_st_ctime = tswapl(st.st_ctime);
2395             }
2396         }
2397         break;
2398 #ifdef TARGET_NR_olduname
2399     case TARGET_NR_olduname:
2400         goto unimplemented;
2401 #endif
2402 #ifdef TARGET_NR_iopl
2403     case TARGET_NR_iopl:
2404         goto unimplemented;
2405 #endif
2406     case TARGET_NR_vhangup:
2407         ret = get_errno(vhangup());
2408         break;
2409 #ifdef TARGET_NR_idle
2410     case TARGET_NR_idle:
2411         goto unimplemented;
2412 #endif
2413 #ifdef TARGET_NR_syscall
2414     case TARGET_NR_syscall:
2415         ret = do_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
2416         break;
2417 #endif
2418     case TARGET_NR_wait4:
2419         {
2420             int status;
2421             target_long *status_ptr = (void *)arg2;
2422             struct rusage rusage, *rusage_ptr;
2423             struct target_rusage *target_rusage = (void *)arg4;
2424             if (target_rusage)
2425                 rusage_ptr = &rusage;
2426             else
2427                 rusage_ptr = NULL;
2428             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
2429             if (!is_error(ret)) {
2430                 if (status_ptr)
2431                     *status_ptr = tswap32(status);
2432                 if (target_rusage) {
2433                     host_to_target_rusage(target_rusage, &rusage);
2434                 }
2435             }
2436         }
2437         break;
2438     case TARGET_NR_swapoff:
2439         ret = get_errno(swapoff((const char *)arg1));
2440         break;
2441     case TARGET_NR_sysinfo:
2442         {
2443             struct target_sysinfo *target_value = (void *)arg1;
2444             struct sysinfo value;
2445             ret = get_errno(sysinfo(&value));
2446             if (!is_error(ret) && target_value)
2447             {
2448                 __put_user(value.uptime, &target_value->uptime);
2449                 __put_user(value.loads[0], &target_value->loads[0]);
2450                 __put_user(value.loads[1], &target_value->loads[1]);
2451                 __put_user(value.loads[2], &target_value->loads[2]);
2452                 __put_user(value.totalram, &target_value->totalram);
2453                 __put_user(value.freeram, &target_value->freeram);
2454                 __put_user(value.sharedram, &target_value->sharedram);
2455                 __put_user(value.bufferram, &target_value->bufferram);
2456                 __put_user(value.totalswap, &target_value->totalswap);
2457                 __put_user(value.freeswap, &target_value->freeswap);
2458                 __put_user(value.procs, &target_value->procs);
2459                 __put_user(value.totalhigh, &target_value->totalhigh);
2460                 __put_user(value.freehigh, &target_value->freehigh);
2461                 __put_user(value.mem_unit, &target_value->mem_unit);
2462             }
2463         }
2464         break;
2465     case TARGET_NR_ipc:
2466         ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6);
2467         break;
2468     case TARGET_NR_fsync:
2469         ret = get_errno(fsync(arg1));
2470         break;
2471     case TARGET_NR_clone:
2472         ret = get_errno(do_fork(cpu_env, arg1, arg2));
2473         break;
2474 #ifdef __NR_exit_group
2475         /* new thread calls */
2476     case TARGET_NR_exit_group:
2477         gdb_exit(cpu_env, arg1);
2478         ret = get_errno(exit_group(arg1));
2479         break;
2480 #endif
2481     case TARGET_NR_setdomainname:
2482         ret = get_errno(setdomainname((const char *)arg1, arg2));
2483         break;
2484     case TARGET_NR_uname:
2485         /* no need to transcode because we use the linux syscall */
2486         {
2487             struct new_utsname * buf;
2488
2489             buf = (struct new_utsname *)arg1;
2490             ret = get_errno(sys_uname(buf));
2491             if (!is_error(ret)) {
2492                 /* Overrite the native machine name with whatever is being
2493                    emulated. */
2494                 strcpy (buf->machine, UNAME_MACHINE);
2495             }
2496         }
2497         break;
2498 #ifdef TARGET_I386
2499     case TARGET_NR_modify_ldt:
2500         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
2501         break;
2502     case TARGET_NR_vm86old:
2503         goto unimplemented;
2504     case TARGET_NR_vm86:
2505         ret = do_vm86(cpu_env, arg1, (void *)arg2);
2506         break;
2507 #endif
2508     case TARGET_NR_adjtimex:
2509         goto unimplemented;
2510     case TARGET_NR_create_module:
2511     case TARGET_NR_init_module:
2512     case TARGET_NR_delete_module:
2513     case TARGET_NR_get_kernel_syms:
2514         goto unimplemented;
2515     case TARGET_NR_quotactl:
2516         goto unimplemented;
2517     case TARGET_NR_getpgid:
2518         ret = get_errno(getpgid(arg1));
2519         break;
2520     case TARGET_NR_fchdir:
2521         ret = get_errno(fchdir(arg1));
2522         break;
2523     case TARGET_NR_bdflush:
2524         goto unimplemented;
2525     case TARGET_NR_sysfs:
2526         goto unimplemented;
2527     case TARGET_NR_personality:
2528         ret = get_errno(personality(arg1));
2529         break;
2530     case TARGET_NR_afs_syscall:
2531         goto unimplemented;
2532     case TARGET_NR__llseek:
2533         {
2534 #if defined (__x86_64__)
2535             ret = get_errno(lseek(arg1, ((uint64_t )arg2 << 32) | arg3, arg5));
2536             *(int64_t *)arg4 = ret;
2537 #else
2538             int64_t res;
2539             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
2540             *(int64_t *)arg4 = tswap64(res);
2541 #endif
2542         }
2543         break;
2544     case TARGET_NR_getdents:
2545 #if TARGET_LONG_SIZE != 4
2546 #warning not supported
2547 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
2548         {
2549             struct target_dirent *target_dirp = (void *)arg2;
2550             struct dirent *dirp;
2551             long count = arg3;
2552
2553             dirp = malloc(count);
2554             if (!dirp)
2555                 return -ENOMEM;
2556
2557             ret = get_errno(sys_getdents(arg1, dirp, count));
2558             if (!is_error(ret)) {
2559                 struct dirent *de;
2560                 struct target_dirent *tde;
2561                 int len = ret;
2562                 int reclen, treclen;
2563                 int count1, tnamelen;
2564
2565                 count1 = 0;
2566                 de = dirp;
2567                 tde = target_dirp;
2568                 while (len > 0) {
2569                     reclen = de->d_reclen;
2570                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
2571                     tde->d_reclen = tswap16(treclen);
2572                     tde->d_ino = tswapl(de->d_ino);
2573                     tde->d_off = tswapl(de->d_off);
2574                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
2575                     if (tnamelen > 256)
2576                         tnamelen = 256;
2577                     /* XXX: may not be correct */
2578                     strncpy(tde->d_name, de->d_name, tnamelen);
2579                     de = (struct dirent *)((char *)de + reclen);
2580                     len -= reclen;
2581                     tde = (struct dirent *)((char *)tde + treclen);
2582                     count1 += treclen;
2583                 }
2584                 ret = count1;
2585             }
2586             free(dirp);
2587         }
2588 #else
2589         {
2590             struct dirent *dirp = (void *)arg2;
2591             long count = arg3;
2592
2593             ret = get_errno(sys_getdents(arg1, dirp, count));
2594             if (!is_error(ret)) {
2595                 struct dirent *de;
2596                 int len = ret;
2597                 int reclen;
2598                 de = dirp;
2599                 while (len > 0) {
2600                     reclen = de->d_reclen;
2601                     if (reclen > len)
2602                         break;
2603                     de->d_reclen = tswap16(reclen);
2604                     tswapls(&de->d_ino);
2605                     tswapls(&de->d_off);
2606                     de = (struct dirent *)((char *)de + reclen);
2607                     len -= reclen;
2608                 }
2609             }
2610         }
2611 #endif
2612         break;
2613 #ifdef TARGET_NR_getdents64
2614     case TARGET_NR_getdents64:
2615         {
2616             struct dirent64 *dirp = (void *)arg2;
2617             long count = arg3;
2618             ret = get_errno(sys_getdents64(arg1, dirp, count));
2619             if (!is_error(ret)) {
2620                 struct dirent64 *de;
2621                 int len = ret;
2622                 int reclen;
2623                 de = dirp;
2624                 while (len > 0) {
2625                     reclen = de->d_reclen;
2626                     if (reclen > len)
2627                         break;
2628                     de->d_reclen = tswap16(reclen);
2629                     tswap64s(&de->d_ino);
2630                     tswap64s(&de->d_off);
2631                     de = (struct dirent64 *)((char *)de + reclen);
2632                     len -= reclen;
2633                 }
2634             }
2635         }
2636         break;
2637 #endif /* TARGET_NR_getdents64 */
2638     case TARGET_NR__newselect:
2639         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2640                         (void *)arg5);
2641         break;
2642     case TARGET_NR_poll:
2643         {
2644             struct target_pollfd *target_pfd = (void *)arg1;
2645             unsigned int nfds = arg2;
2646             int timeout = arg3;
2647             struct pollfd *pfd;
2648             unsigned int i;
2649
2650             pfd = alloca(sizeof(struct pollfd) * nfds);
2651             for(i = 0; i < nfds; i++) {
2652                 pfd[i].fd = tswap32(target_pfd[i].fd);
2653                 pfd[i].events = tswap16(target_pfd[i].events);
2654             }
2655             ret = get_errno(poll(pfd, nfds, timeout));
2656             if (!is_error(ret)) {
2657                 for(i = 0; i < nfds; i++) {
2658                     target_pfd[i].revents = tswap16(pfd[i].revents);
2659                 }
2660             }
2661         }
2662         break;
2663     case TARGET_NR_flock:
2664         /* NOTE: the flock constant seems to be the same for every
2665            Linux platform */
2666         ret = get_errno(flock(arg1, arg2));
2667         break;
2668     case TARGET_NR_readv:
2669         {
2670             int count = arg3;
2671             int i;
2672             struct iovec *vec;
2673             struct target_iovec *target_vec = (void *)arg2;
2674
2675             vec = alloca(count * sizeof(struct iovec));
2676             for(i = 0;i < count; i++) {
2677                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2678                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2679             }
2680             ret = get_errno(readv(arg1, vec, count));
2681         }
2682         break;
2683     case TARGET_NR_writev:
2684         {
2685             int count = arg3;
2686             int i;
2687             struct iovec *vec;
2688             struct target_iovec *target_vec = (void *)arg2;
2689
2690             vec = alloca(count * sizeof(struct iovec));
2691             for(i = 0;i < count; i++) {
2692                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2693                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2694             }
2695             ret = get_errno(writev(arg1, vec, count));
2696         }
2697         break;
2698     case TARGET_NR_getsid:
2699         ret = get_errno(getsid(arg1));
2700         break;
2701     case TARGET_NR_fdatasync:
2702         ret = get_errno(fdatasync(arg1));
2703         break;
2704     case TARGET_NR__sysctl:
2705         /* We don't implement this, but ENODIR is always a safe
2706            return value. */
2707         return -ENOTDIR;
2708     case TARGET_NR_sched_setparam:
2709         {
2710             struct sched_param *target_schp = (void *)arg2;
2711             struct sched_param schp;
2712             schp.sched_priority = tswap32(target_schp->sched_priority);
2713             ret = get_errno(sched_setparam(arg1, &schp));
2714         }
2715         break;
2716     case TARGET_NR_sched_getparam:
2717         {
2718             struct sched_param *target_schp = (void *)arg2;
2719             struct sched_param schp;
2720             ret = get_errno(sched_getparam(arg1, &schp));
2721             if (!is_error(ret)) {
2722                 target_schp->sched_priority = tswap32(schp.sched_priority);
2723             }
2724         }
2725         break;
2726     case TARGET_NR_sched_setscheduler:
2727         {
2728             struct sched_param *target_schp = (void *)arg3;
2729             struct sched_param schp;
2730             schp.sched_priority = tswap32(target_schp->sched_priority);
2731             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2732         }
2733         break;
2734     case TARGET_NR_sched_getscheduler:
2735         ret = get_errno(sched_getscheduler(arg1));
2736         break;
2737     case TARGET_NR_sched_yield:
2738         ret = get_errno(sched_yield());
2739         break;
2740     case TARGET_NR_sched_get_priority_max:
2741         ret = get_errno(sched_get_priority_max(arg1));
2742         break;
2743     case TARGET_NR_sched_get_priority_min:
2744         ret = get_errno(sched_get_priority_min(arg1));
2745         break;
2746     case TARGET_NR_sched_rr_get_interval:
2747         {
2748             struct target_timespec *target_ts = (void *)arg2;
2749             struct timespec ts;
2750             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2751             if (!is_error(ret)) {
2752                 target_ts->tv_sec = tswapl(ts.tv_sec);
2753                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2754             }
2755         }
2756         break;
2757     case TARGET_NR_nanosleep:
2758         {
2759             struct target_timespec *target_req = (void *)arg1;
2760             struct target_timespec *target_rem = (void *)arg2;
2761             struct timespec req, rem;
2762             req.tv_sec = tswapl(target_req->tv_sec);
2763             req.tv_nsec = tswapl(target_req->tv_nsec);
2764             ret = get_errno(nanosleep(&req, &rem));
2765             if (is_error(ret) && target_rem) {
2766                 target_rem->tv_sec = tswapl(rem.tv_sec);
2767                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2768             }
2769         }
2770         break;
2771     case TARGET_NR_query_module:
2772         goto unimplemented;
2773     case TARGET_NR_nfsservctl:
2774         goto unimplemented;
2775     case TARGET_NR_prctl:
2776         goto unimplemented;
2777 #ifdef TARGET_NR_pread
2778     case TARGET_NR_pread:
2779         page_unprotect_range((void *)arg2, arg3);
2780         ret = get_errno(pread(arg1, (void *)arg2, arg3, arg4));
2781         break;
2782     case TARGET_NR_pwrite:
2783         ret = get_errno(pwrite(arg1, (void *)arg2, arg3, arg4));
2784         break;
2785 #endif
2786     case TARGET_NR_getcwd:
2787         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2788         break;
2789     case TARGET_NR_capget:
2790         goto unimplemented;
2791     case TARGET_NR_capset:
2792         goto unimplemented;
2793     case TARGET_NR_sigaltstack:
2794         goto unimplemented;
2795     case TARGET_NR_sendfile:
2796         goto unimplemented;
2797 #ifdef TARGET_NR_getpmsg
2798     case TARGET_NR_getpmsg:
2799         goto unimplemented;
2800 #endif
2801 #ifdef TARGET_NR_putpmsg
2802     case TARGET_NR_putpmsg:
2803         goto unimplemented;
2804 #endif
2805     case TARGET_NR_vfork:
2806         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2807         break;
2808 #ifdef TARGET_NR_ugetrlimit
2809     case TARGET_NR_ugetrlimit:
2810     {
2811         struct rlimit rlim;
2812         ret = get_errno(getrlimit(arg1, &rlim));
2813         if (!is_error(ret)) {
2814             struct target_rlimit *target_rlim = (void *)arg2;
2815             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2816             target_rlim->rlim_max = tswapl(rlim.rlim_max);
2817         }
2818         break;
2819     }
2820 #endif
2821 #ifdef TARGET_NR_truncate64
2822     case TARGET_NR_truncate64:
2823         ret = get_errno(truncate64((const char *)arg1, arg2));
2824         break;
2825 #endif
2826 #ifdef TARGET_NR_ftruncate64
2827     case TARGET_NR_ftruncate64:
2828         ret = get_errno(ftruncate64(arg1, arg2));
2829         break;
2830 #endif
2831 #ifdef TARGET_NR_stat64
2832     case TARGET_NR_stat64:
2833         ret = get_errno(stat(path((const char *)arg1), &st));
2834         goto do_stat64;
2835 #endif
2836 #ifdef TARGET_NR_lstat64
2837     case TARGET_NR_lstat64:
2838         ret = get_errno(lstat(path((const char *)arg1), &st));
2839         goto do_stat64;
2840 #endif
2841 #ifdef TARGET_NR_fstat64
2842     case TARGET_NR_fstat64:
2843         {
2844             ret = get_errno(fstat(arg1, &st));
2845         do_stat64:
2846             if (!is_error(ret)) {
2847                 struct target_stat64 *target_st = (void *)arg2;
2848                 memset(target_st, 0, sizeof(struct target_stat64));
2849                 put_user(st.st_dev, &target_st->st_dev);
2850                 put_user(st.st_ino, &target_st->st_ino);
2851 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2852                 put_user(st.st_ino, &target_st->__st_ino);
2853 #endif
2854                 put_user(st.st_mode, &target_st->st_mode);
2855                 put_user(st.st_nlink, &target_st->st_nlink);
2856                 put_user(st.st_uid, &target_st->st_uid);
2857                 put_user(st.st_gid, &target_st->st_gid);
2858                 put_user(st.st_rdev, &target_st->st_rdev);
2859                 /* XXX: better use of kernel struct */
2860                 put_user(st.st_size, &target_st->st_size);
2861                 put_user(st.st_blksize, &target_st->st_blksize);
2862                 put_user(st.st_blocks, &target_st->st_blocks);
2863                 put_user(st.st_atime, &target_st->target_st_atime);
2864                 put_user(st.st_mtime, &target_st->target_st_mtime);
2865                 put_user(st.st_ctime, &target_st->target_st_ctime);
2866             }
2867         }
2868         break;
2869 #endif
2870 #ifdef USE_UID16
2871     case TARGET_NR_lchown:
2872         ret = get_errno(lchown((const char *)arg1, low2highuid(arg2), low2highgid(arg3)));
2873         break;
2874     case TARGET_NR_getuid:
2875         ret = get_errno(high2lowuid(getuid()));
2876         break;
2877     case TARGET_NR_getgid:
2878         ret = get_errno(high2lowgid(getgid()));
2879         break;
2880     case TARGET_NR_geteuid:
2881         ret = get_errno(high2lowuid(geteuid()));
2882         break;
2883     case TARGET_NR_getegid:
2884         ret = get_errno(high2lowgid(getegid()));
2885         break;
2886     case TARGET_NR_setreuid:
2887         ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
2888         break;
2889     case TARGET_NR_setregid:
2890         ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
2891         break;
2892     case TARGET_NR_getgroups:
2893         {
2894             int gidsetsize = arg1;
2895             uint16_t *target_grouplist = (void *)arg2;
2896             gid_t *grouplist;
2897             int i;
2898
2899             grouplist = alloca(gidsetsize * sizeof(gid_t));
2900             ret = get_errno(getgroups(gidsetsize, grouplist));
2901             if (!is_error(ret)) {
2902                 for(i = 0;i < gidsetsize; i++)
2903                     target_grouplist[i] = tswap16(grouplist[i]);
2904             }
2905         }
2906         break;
2907     case TARGET_NR_setgroups:
2908         {
2909             int gidsetsize = arg1;
2910             uint16_t *target_grouplist = (void *)arg2;
2911             gid_t *grouplist;
2912             int i;
2913
2914             grouplist = alloca(gidsetsize * sizeof(gid_t));
2915             for(i = 0;i < gidsetsize; i++)
2916                 grouplist[i] = tswap16(target_grouplist[i]);
2917             ret = get_errno(setgroups(gidsetsize, grouplist));
2918         }
2919         break;
2920     case TARGET_NR_fchown:
2921         ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
2922         break;
2923 #ifdef TARGET_NR_setresuid
2924     case TARGET_NR_setresuid:
2925         ret = get_errno(setresuid(low2highuid(arg1),
2926                                   low2highuid(arg2),
2927                                   low2highuid(arg3)));
2928         break;
2929 #endif
2930 #ifdef TARGET_NR_getresuid
2931     case TARGET_NR_getresuid:
2932         {
2933             int ruid, euid, suid;
2934             ret = get_errno(getresuid(&ruid, &euid, &suid));
2935             if (!is_error(ret)) {
2936                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2937                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2938                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2939             }
2940         }
2941         break;
2942 #endif
2943 #ifdef TARGET_NR_getresgid
2944     case TARGET_NR_setresgid:
2945         ret = get_errno(setresgid(low2highgid(arg1),
2946                                   low2highgid(arg2),
2947                                   low2highgid(arg3)));
2948         break;
2949 #endif
2950 #ifdef TARGET_NR_getresgid
2951     case TARGET_NR_getresgid:
2952         {
2953             int rgid, egid, sgid;
2954             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2955             if (!is_error(ret)) {
2956                 *(uint16_t *)arg1 = tswap16(high2lowgid(rgid));
2957                 *(uint16_t *)arg2 = tswap16(high2lowgid(egid));
2958                 *(uint16_t *)arg3 = tswap16(high2lowgid(sgid));
2959             }
2960         }
2961         break;
2962 #endif
2963     case TARGET_NR_chown:
2964         ret = get_errno(chown((const char *)arg1, low2highuid(arg2), low2highgid(arg3)));
2965         break;
2966     case TARGET_NR_setuid:
2967         ret = get_errno(setuid(low2highuid(arg1)));
2968         break;
2969     case TARGET_NR_setgid:
2970         ret = get_errno(setgid(low2highgid(arg1)));
2971         break;
2972     case TARGET_NR_setfsuid:
2973         ret = get_errno(setfsuid(arg1));
2974         break;
2975     case TARGET_NR_setfsgid:
2976         ret = get_errno(setfsgid(arg1));
2977         break;
2978 #endif /* USE_UID16 */
2979
2980 #ifdef TARGET_NR_lchown32
2981     case TARGET_NR_lchown32:
2982         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2983         break;
2984 #endif
2985 #ifdef TARGET_NR_getuid32
2986     case TARGET_NR_getuid32:
2987         ret = get_errno(getuid());
2988         break;
2989 #endif
2990 #ifdef TARGET_NR_getgid32
2991     case TARGET_NR_getgid32:
2992         ret = get_errno(getgid());
2993         break;
2994 #endif
2995 #ifdef TARGET_NR_geteuid32
2996     case TARGET_NR_geteuid32:
2997         ret = get_errno(geteuid());
2998         break;
2999 #endif
3000 #ifdef TARGET_NR_getegid32
3001     case TARGET_NR_getegid32:
3002         ret = get_errno(getegid());
3003         break;
3004 #endif
3005 #ifdef TARGET_NR_setreuid32
3006     case TARGET_NR_setreuid32:
3007         ret = get_errno(setreuid(arg1, arg2));
3008         break;
3009 #endif
3010 #ifdef TARGET_NR_setregid32
3011     case TARGET_NR_setregid32:
3012         ret = get_errno(setregid(arg1, arg2));
3013         break;
3014 #endif
3015 #ifdef TARGET_NR_getgroups32
3016     case TARGET_NR_getgroups32:
3017         {
3018             int gidsetsize = arg1;
3019             uint32_t *target_grouplist = (void *)arg2;
3020             gid_t *grouplist;
3021             int i;
3022
3023             grouplist = alloca(gidsetsize * sizeof(gid_t));
3024             ret = get_errno(getgroups(gidsetsize, grouplist));
3025             if (!is_error(ret)) {
3026                 for(i = 0;i < gidsetsize; i++)
3027                     put_user(grouplist[i], &target_grouplist[i]);
3028             }
3029         }
3030         break;
3031 #endif
3032 #ifdef TARGET_NR_setgroups32
3033     case TARGET_NR_setgroups32:
3034         {
3035             int gidsetsize = arg1;
3036             uint32_t *target_grouplist = (void *)arg2;
3037             gid_t *grouplist;
3038             int i;
3039
3040             grouplist = alloca(gidsetsize * sizeof(gid_t));
3041             for(i = 0;i < gidsetsize; i++)
3042                 get_user(grouplist[i], &target_grouplist[i]);
3043             ret = get_errno(setgroups(gidsetsize, grouplist));
3044         }
3045         break;
3046 #endif
3047 #ifdef TARGET_NR_fchown32
3048     case TARGET_NR_fchown32:
3049         ret = get_errno(fchown(arg1, arg2, arg3));
3050         break;
3051 #endif
3052 #ifdef TARGET_NR_setresuid32
3053     case TARGET_NR_setresuid32:
3054         ret = get_errno(setresuid(arg1, arg2, arg3));
3055         break;
3056 #endif
3057 #ifdef TARGET_NR_getresuid32
3058     case TARGET_NR_getresuid32:
3059         {
3060             int ruid, euid, suid;
3061             ret = get_errno(getresuid(&ruid, &euid, &suid));
3062             if (!is_error(ret)) {
3063                 *(uint32_t *)arg1 = tswap32(ruid);
3064                 *(uint32_t *)arg2 = tswap32(euid);
3065                 *(uint32_t *)arg3 = tswap32(suid);
3066             }
3067         }
3068         break;
3069 #endif
3070 #ifdef TARGET_NR_setresgid32
3071     case TARGET_NR_setresgid32:
3072         ret = get_errno(setresgid(arg1, arg2, arg3));
3073         break;
3074 #endif
3075 #ifdef TARGET_NR_getresgid32
3076     case TARGET_NR_getresgid32:
3077         {
3078             int rgid, egid, sgid;
3079             ret = get_errno(getresgid(&rgid, &egid, &sgid));
3080             if (!is_error(ret)) {
3081                 *(uint32_t *)arg1 = tswap32(rgid);
3082                 *(uint32_t *)arg2 = tswap32(egid);
3083                 *(uint32_t *)arg3 = tswap32(sgid);
3084             }
3085         }
3086         break;
3087 #endif
3088 #ifdef TARGET_NR_chown32
3089     case TARGET_NR_chown32:
3090         ret = get_errno(chown((const char *)arg1, arg2, arg3));
3091         break;
3092 #endif
3093 #ifdef TARGET_NR_setuid32
3094     case TARGET_NR_setuid32:
3095         ret = get_errno(setuid(arg1));
3096         break;
3097 #endif
3098 #ifdef TARGET_NR_setgid32
3099     case TARGET_NR_setgid32:
3100         ret = get_errno(setgid(arg1));
3101         break;
3102 #endif
3103 #ifdef TARGET_NR_setfsuid32
3104     case TARGET_NR_setfsuid32:
3105         ret = get_errno(setfsuid(arg1));
3106         break;
3107 #endif
3108 #ifdef TARGET_NR_setfsgid32
3109     case TARGET_NR_setfsgid32:
3110         ret = get_errno(setfsgid(arg1));
3111         break;
3112 #endif
3113
3114     case TARGET_NR_pivot_root:
3115         goto unimplemented;
3116 #ifdef TARGET_NR_mincore
3117     case TARGET_NR_mincore:
3118         goto unimplemented;
3119 #endif
3120 #ifdef TARGET_NR_madvise
3121     case TARGET_NR_madvise:
3122         goto unimplemented;
3123 #endif
3124 #if TARGET_LONG_BITS == 32
3125     case TARGET_NR_fcntl64:
3126     {
3127         struct flock64 fl;
3128         struct target_flock64 *target_fl = (void *)arg3;
3129
3130         switch(arg2) {
3131         case F_GETLK64:
3132             ret = get_errno(fcntl(arg1, arg2, &fl));
3133             if (ret == 0) {
3134                 target_fl->l_type = tswap16(fl.l_type);
3135                 target_fl->l_whence = tswap16(fl.l_whence);
3136                 target_fl->l_start = tswap64(fl.l_start);
3137                 target_fl->l_len = tswap64(fl.l_len);
3138                 target_fl->l_pid = tswapl(fl.l_pid);
3139             }
3140             break;
3141
3142         case F_SETLK64:
3143         case F_SETLKW64:
3144             fl.l_type = tswap16(target_fl->l_type);
3145             fl.l_whence = tswap16(target_fl->l_whence);
3146             fl.l_start = tswap64(target_fl->l_start);
3147             fl.l_len = tswap64(target_fl->l_len);
3148             fl.l_pid = tswapl(target_fl->l_pid);
3149             ret = get_errno(fcntl(arg1, arg2, &fl));
3150             break;
3151         default:
3152             ret = get_errno(do_fcntl(arg1, arg2, arg3));
3153             break;
3154         }
3155         break;
3156     }
3157 #endif
3158 #ifdef TARGET_NR_security
3159     case TARGET_NR_security:
3160         goto unimplemented;
3161 #endif
3162 #ifdef TARGET_NR_getpagesize
3163     case TARGET_NR_getpagesize:
3164         ret = TARGET_PAGE_SIZE;
3165         break;
3166 #endif
3167     case TARGET_NR_gettid:
3168         ret = get_errno(gettid());
3169         break;
3170     case TARGET_NR_readahead:
3171         goto unimplemented;
3172 #ifdef TARGET_NR_setxattr
3173     case TARGET_NR_setxattr:
3174     case TARGET_NR_lsetxattr:
3175     case TARGET_NR_fsetxattr:
3176     case TARGET_NR_getxattr:
3177     case TARGET_NR_lgetxattr:
3178     case TARGET_NR_fgetxattr:
3179     case TARGET_NR_listxattr:
3180     case TARGET_NR_llistxattr:
3181     case TARGET_NR_flistxattr:
3182     case TARGET_NR_removexattr:
3183     case TARGET_NR_lremovexattr:
3184     case TARGET_NR_fremovexattr:
3185         goto unimplemented_nowarn;
3186 #endif
3187 #ifdef TARGET_NR_set_thread_area
3188     case TARGET_NR_set_thread_area:
3189     case TARGET_NR_get_thread_area:
3190         goto unimplemented_nowarn;
3191 #endif
3192     default:
3193     unimplemented:
3194         gemu_log("qemu: Unsupported syscall: %d\n", num);
3195 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_set_thread_area)
3196     unimplemented_nowarn:
3197 #endif
3198         ret = -ENOSYS;
3199         break;
3200     }
3201  fail:
3202 #ifdef DEBUG
3203     gemu_log(" = %ld\n", ret);
3204 #endif
3205     return ret;
3206 }
3207